JP2013054427A - Diagnostic output device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the possibility of abnormal contact between signals of detection circuits and an internal logic module and to reduce the number of input terminals and the circuit scale between the detection circuits and the internal logic module.SOLUTION: A diagnostic output device includes a selection circuit and an internal logic module. The selection circuit allows one of detection signals sent from respective detection circuits to selectively pass therethrough. At this time, the selection circuit allows, on the basis of an input selection signal, a detection signal sent from a detection circuit connected to an output circuit indicated by the selection signal to pass therethrough. While individually inputting output operation signals to respective output circuits, the internal logic module diagnoses whether an output signal has been outputted in accordance with a corresponding output operation signal or not on the basis of the detection signal which has passed through the selection circuit.

Description

  Embodiments described herein relate generally to an output device with diagnosis.

  In recent years, international functional safety standards have been compiled as standard IEC 61508 “Functional safety of electrical / electronic / programmable electronic safety-related systems” of the International Electrotechnical Commission for equipment manufacturers and suppliers. Further, IEC 61508 is issued as an international standard process application standard for system designers, integrators, and users.

  These standards assess the safety of the life cycle from system design, maintenance, and disposal, and define the safety integrity level (SIL), which is a required level of risk reduction, as a quantitative evaluation scale.

  Here, in a safety instrumentation system or the like for safely stopping a plant or the like, high safety and reliability are required in order to increase the above-described safety level. For example, in a safety instrumented system or the like, it is necessary to avoid an external device from being in an abnormal state due to an erroneous control signal being output due to a failure or malfunction of an output circuit of a control device. In order to avoid erroneous control signal output, it is necessary to determine whether or not the output circuit is operating normally. In general, there is a readback input method for determining whether an output circuit is operating normally by reading back an external control signal inside the device.

JP 2010-277220 A

  However, the readback input method as described above usually has no problem, but according to the study of the present inventor, there are the following disadvantages.

  For example, in the case of an output device with diagnosis having a plurality of output terminals, a connection between the detection circuit and the internal logic is required for each output terminal. As a result, the number of input terminals on the internal logic side and the circuit scale become enormous, and there are inconveniences that a diagnosis error is likely to occur due to a mixture of signals between the detection circuit and the internal logic.

  The problem to be solved by the present invention is to provide a diagnostic output device capable of reducing the possibility of signal contact between the detection circuit and the internal logic, and reducing the number of input terminals and the circuit scale between the detection circuit and the internal logic. It is to be.

  The output device with diagnosis according to the embodiment includes a plurality of output terminals, a plurality of output circuits, a plurality of detection circuits, a selection circuit, and an internal logic module.

  The plurality of output terminals individually output a plurality of output signals.

  The plurality of output circuits output an output signal to any one of the output terminals in accordance with the input output operation signal.

  The plurality of detection circuits individually detect output signals between the output circuits and the output terminals and send out detection signals.

  The selection circuit selectively passes one detection signal among the detection signals transmitted from the detection circuits. The selection circuit passes a detection signal transmitted from a detection circuit connected to an output circuit indicated by the selection signal based on the input selection signal.

  The internal logic module individually inputs the output operation signal to each of the output circuits, and determines whether an output signal is output according to the output operation signal based on the detection signal that has passed through the selection circuit. Diagnose.

  The internal logic module includes a selection signal input module, an output operation signal input module, and a determination module.

  The selection signal input module selects one output circuit among the output circuits regularly or irregularly, and inputs a selection signal indicating the selected output circuit to the selection circuit.

  The output operation signal input module inputs the output operation signal to the selected output circuit.

  The determination module performs the diagnosis by determining whether or not the output operation signal input by the output operation signal input module matches the detection signal that has passed through the selection circuit.

It is a schematic diagram which shows the output device with a diagnosis which concerns on 1st Embodiment, and its periphery structure. It is a schematic diagram which shows the signal waveform in the same embodiment. It is a schematic diagram which shows the output device with a diagnosis which concerns on 2nd Embodiment, and its periphery structure. It is a schematic diagram which shows the signal waveform in the same embodiment. It is a schematic diagram which shows the output device with a diagnosis which concerns on 3rd Embodiment, and its periphery structure. It is a schematic diagram which shows the signal waveform in the same embodiment. It is a schematic diagram which shows the output device with a diagnosis which concerns on 4th Embodiment, and its periphery structure. It is a schematic diagram which shows the output device with a diagnosis which concerns on 5th Embodiment, and its periphery structure. It is a schematic diagram which shows the output device with a diagnosis which concerns on 6th Embodiment, and its periphery structure. It is a schematic diagram which shows the signal waveform in the same embodiment. It is a schematic diagram which shows the output apparatus with a diagnosis which concerns on 7th Embodiment, and its periphery structure. It is a schematic diagram which shows the signal waveform in the same embodiment. It is a schematic diagram which shows the output device with a diagnosis which concerns on 8th Embodiment, and its periphery structure.

  Each embodiment will be described below with reference to the drawings.

<First Embodiment>
FIG. 1 is a schematic diagram illustrating an output device with diagnosis and a peripheral configuration thereof according to the first embodiment. The output device with diagnosis 1 includes a plurality of output terminals 1c1 to 1c3, a plurality of output circuits 121 to 123, a plurality of detection circuits 131 to 133, a selection circuit 14, and an internal logic module 11. Note that the output terminals 1c1 to 1c3, the output circuits 121 to 123, and the detection circuits 131 to 133 are provided in the same number as each other. is there.

  Here, the output terminals 1c1 to 1c3 are for individually outputting a plurality of output signals output from the output circuits 121 to 123 to the load 3, respectively.

  Each of the output circuits 121 to 123 is a switching circuit that turns on / off a signal line connecting the power source 2 and the load 3 according to an output operation signal. Specifically, the output circuits 121 to 123 are connected to the output operation signal input from the internal logic module 11. It has a function of outputting an output signal to any one of the output terminals 1c1 to 1c3 according to the individual case.

  Each of the detection circuits 131 to 133 has a function of individually detecting an output signal between each of the output circuits 121 to 123 and each of the output terminals 1c1 to 1c3 and sending the detection signal to the selection circuit 14.

  The selection circuit 14 is a multiplexer mechanism that outputs a single output signal from a plurality of input signals in accordance with the selection signal. For example, based on the selection signal input from the internal logic module 11, an output indicated by the selection signal The internal logic module 11 has a function of passing detection signals sent from the detection circuits 131 to 133 connected to the circuits 121 to 123.

  The internal logic module 11 individually inputs an output operation signal to each of the output circuits 121 to 123, and whether or not an output signal is output according to the output operation signal based on the detection signal that has passed through the selection circuit 14. It has a function to diagnose.

  Specifically, the internal logic module 11 includes an output control unit 111 and a diagnosis unit 112.

  The output control unit 111 has an output operation signal input function for inputting an output operation signal to the output circuit (for example, 121) selected by the diagnosis unit 112.

  The diagnosis unit 112 has the following functions (f112-1) to (f112-2).

  (f112-1) One output circuit (for example, 121) is selected from the output circuits 121 to 123 regularly or irregularly, and a selection signal indicating the selected output circuit (for example, 121) is selected. 14 is a selection signal input function.

  (f112-2) A determination function for executing diagnosis by determining whether or not the output operation signal input by the output control unit 111 matches the detection signal that has passed through the selection circuit 14.

  The internal logic module 11 can be implemented with either a hardware configuration or a combination configuration of hardware resources and software, and this is the same in the following embodiments. For example, in FIG. 1, the output control unit 111 in the internal logic module 11 is shown as a configuration having an AND circuit and an I / O port having a hardware configuration. However, the configuration is not limited thereto. , Memory and CPU) and software (program) may be combined. The term “module” may be read as “unit” or “device” as appropriate.

  Further, the internal logic module 11 may omit the signals and signal lines input from the diagnosis unit 112 to the output control unit 111 by configuring the output control unit 111 and the diagnosis unit 112 to be constant. The same applies to the following embodiments.

  Next, the operation of the output device with diagnosis configured as described above will be described.

  First, the output control unit 111 sends an output operation signal for outputting a normal output signal for controlling the load 3 to the output circuits 121 to 123 during the period when the output diagnosis is not performed. .

  In response to the output operation signal, the output circuits 121 to 123 turn on / off the signal line connecting the power source 2 and the load 3 to output the output signal to the load 3 individually through the output terminals 1c1 to 1c3. To do.

  And the output apparatus 1 with a diagnosis diagnoses the output signal of each output circuit 121-123 regularly or at arbitrary timings. Here, as shown in FIG. 2A, an example of regular diagnosis will be described.

  The diagnosis unit 112 selects the diagnosis timing and the output circuits 121 to 123 for diagnosis. For example, the diagnosis circuit 112 uses the selected output circuit 121 as a diagnosis target and has a pulse waveform as shown in FIG. The signal S12 is sent to the output control unit 111. The diagnostic pulse internal signal is issued to only one output circuit at a time.

  The output control unit 111 calculates a logical product (S13 = S11 · S12) of the normal control internal signal S11 and the diagnostic pulse internal signal S12 as shown in FIG. The output operation signal is input to the output circuit 121 as shown in FIG.

  Also, at the timing when the output operation signal is input to the output circuit 121, the diagnosis unit 112 sends a selection signal indicating information on which output circuit is to be diagnosed to the selection circuit 14, as shown in FIG. Output. Here, the signal line of the selection signal takes the form of a parallel bus. For example, eight output circuits No. 0-No. When 7 exists, the signal line of the selection signal is constituted by a 3-bit parallel bus. In this case, the first output circuit No. The selection signal to 0 is binary “000” and the fourth output circuit No. The selection signal for designating 5 is the binary number “101”. Supplementally, the selection signal shown in FIG. 2B is expressed in decimal numbers, but is actually binary information.

  As shown in FIG. 2 (f), the output circuit 121 receives an output operation signal and turns on / off the signal line connecting the power source 2 and the load 3 as shown in FIG. Is output to the output terminal 1c1. Normally, the output signal takes the form of a square wave in the Lo direction.

  The output signal is input to the detection circuit 131 simultaneously with the load 3. The detection circuit 131 converts the input output signal into a detection signal, and sends the detection signal to the selection circuit 14 as shown in FIG.

  The selection circuit 14 allows the detection signal received from the detection circuit 131 connected to the selected output circuit 121 to pass through the internal logic module 11 as shown in FIG. To send.

  The diagnosis unit 112 of the internal logic module 11 determines whether the output operation signal (FIG. 2E) input by the output control unit 111 matches the detection signal that has passed through the selection circuit 14 (FIG. 2L). Determine whether or not.

  As a result of the determination, when both match, the diagnosis unit 112 diagnoses that the pulse waveform signal sent to the output control unit 111 has returned via the output circuit 121, the detection circuit 121, and the selection circuit 14.

  That is, when the pulse waveform transmission destination designated by the diagnosis unit 112 is the output circuit 121, if the pulse waveform similar to the transmission waveform returns from the detection signal, the output control unit 111 outputs the output circuit 121, the detection circuit 131, and the selection. It can be confirmed that each block belonging to a series of output systems up to the diagnosis unit 112 via the circuit 14 functions normally. In other words, if the pulse waveform detection signal cannot be confirmed even though the pulse waveform signal is transmitted, one or more of the blocks belonging to the output system have failed or the blocks are connected. It is possible to detect that a trouble has occurred in the signal line.

  Next, when the output circuit 122 is to be diagnosed, the output control unit 111 inputs an output operation signal to the output circuit 122 as shown in FIG.

  The output circuit 122 outputs an output signal having a pulse waveform to the output terminal 1c2 in accordance with the operation output signal. The detection circuit 132 converts this output signal into a detection signal, and sends the detection signal to the selection circuit 14 as shown in FIG.

  The selection circuit 14 receives the detection signal received from the detection circuit 132 connected to the selected output circuit 122 by the selection signal “1” (= 001) from the diagnosis unit 112 as shown in FIG. Pass through and send to internal logic module 11.

  The diagnosis unit 112 of the internal logic module 11 determines whether the output operation signal (FIG. 2 (h)) input by the output control unit 111 matches the detection signal (FIG. 2 (l)) that has passed through the selection circuit 14. Determine whether or not.

  As a result of this determination, when the two match, the diagnosis unit 112 diagnoses that the pulse waveform signal sent to the output control unit 111 has returned via the output circuit 122, the detection circuit 122, and the selection circuit 14.

  The above operation is performed even when the output circuit 123 is a diagnosis target, the selection signal “2” (= 010) shown in FIG. 2B, the output operation signal shown in FIG. ) And the detection signal shown in FIG. 2 (l).

  As described above, according to this embodiment, the selection circuit 14 that selectively passes one detection signal among the detection signals transmitted from the detection circuits 131 to 133 and transmits the detection signal to the internal logic module 11 is provided. With the configuration, the possibility of signal contact between the detection circuit and the internal logic can be reduced, and the number of input terminals and the circuit scale between the detection circuit and the internal logic can be reduced.

  Supplementally, each signal path in the diagnostic output device 1 having a plurality of output circuits 121 to 123 may cause signal contact with other signal paths, but the signal between the selection circuit 14 and the internal logic module 11 may be different. Since the signal lines are integrated into one, no contact can occur.

  In addition, a pulse waveform signal is issued to only one output circuit at a time in order to avoid an increase in noise due to contact / interaction with other signal lines. For this reason, even if the selection circuit 14 integrates the signal lines between the detection circuits 131 to 133 and the internal logic module 11, there is no problem.

<Second Embodiment>
FIG. 3 is a schematic diagram showing an output device with diagnosis and its peripheral configuration according to the second embodiment. The same functions as those in FIG. Is mainly described. In addition, description of the function which overlaps also in each following embodiment similarly is abbreviate | omitted.

  The second embodiment is a modification of the first embodiment, and includes a ring number selection circuit 15 instead of the selection circuit 14 shown in FIG.

  Here, the ring number selection circuit 15 is a circuit that selectively passes a detection signal received from one of the detection circuits 131 to 133, and is a detection signal that is passed based on the input switching signal. It has the function to switch between with a rotation number.

  Accordingly, the internal logic module 11 individually inputs the output operation signal to each of the output circuits 121 to 123, while the output signal is output according to the output operation signal based on the detection signal that has passed through the wheel number selection circuit 15. It has a function to diagnose whether it has been output.

  Specifically, the diagnosis unit 112 has the following functions (f112-1 ′) to (f112-2 ′).

  (f112-1 ′) A switching signal indicating one output circuit (eg, 121) among the output circuits 121 to 123 at regular or irregular intervals by a rotation number and indicating the selected output circuit (eg, 121) Is a switching signal input function for inputting to the ring number selection circuit 15.

  (f112-2 ′) A determination function for executing diagnosis by determining whether or not the output operation signal input by the output control unit 111 matches the detection signal that has passed through the wheel number selection circuit 15.

  The output control unit 111 has an output operation signal input function similar to that described above.

  Next, the operation of the output device with diagnosis configured as described above will be described.

  As shown in FIG. 4, the operation of this embodiment is the same as that of the first embodiment, except that the output circuit 121,.

  For example, instead of the selection signal described above, the diagnosis unit 112 issues a switching signal for switching the output circuits 121 to 123 to be diagnosed with a rotation number as shown in FIG. This is sent to the ring number selection circuit 15. Note that the signal line for the switching signal is a 1-bit signal line that only indicates the switching timing of the rotation number, unlike the parallel bus in the selection signal of the first embodiment.

  In response to the switching signal from the diagnosis unit 112, the ring number selection circuit 15 passes the detection signal received from the detection circuit 131 connected to the selected output circuit 121 as shown in FIG. 11 to send.

  The diagnosis unit 112 of the internal logic module 11 matches the output operation signal (FIG. 2 (e)) input by the output control unit 111 with the detection signal (FIG. 2 (l)) that has passed through the wheel number selection circuit 15. It is determined whether or not.

  As a result of the determination, when both match, the diagnosis unit 112 diagnoses that the pulse waveform signal sent to the output control unit 111 has returned via the output circuit 121, the detection circuit 121, and the wheel number selection circuit 15.

  Even when the output circuit 122 or the output circuit 123 is to be diagnosed, the above operation is executed in the same manner as in the first embodiment, except that the output circuits 122 and 123 to be diagnosed rotate in a ring.

  As described above, according to the present embodiment, instead of the selection signal indicating the output circuits 121 to 123, the number of the output circuits 121 to 123 is set to 2 by the configuration using the switching signal for switching the output circuits 121 to 123 by the rotation number. Since one switching signal line is used instead of the selection signal lines used in the number indicated by the decimal number, in addition to the effects of the first embodiment, an input terminal between the detection circuits 131 to 133 and the internal logic module 11 The number and circuit scale can be further reduced.

<Third Embodiment>
FIG. 5 is a schematic diagram illustrating an output device with diagnosis and a peripheral configuration thereof according to the third embodiment.

  The third embodiment is a modification of the first embodiment, and instead of the selection signal line between the diagnosis unit 112 and the selection circuit 14 illustrated in FIG. 1, the internal logic module 11 and each output circuit 121. ˜123 and the selection circuit 14 are provided with a coding circuit 16.

  Here, the encoding circuit 16 extracts the output operation signal that is individually input from the internal logic module 11 to each of the output circuits 121,..., And encodes the extracted output operation signal. Has a function of creating a selection signal indicating the output circuits 121,. The encoding circuit 16 is configured as an encoder circuit.

  Accordingly, the selection circuit 14 is a circuit that selectively passes one detection signal among the detection signals transmitted from the detection circuits 131 to 133, and the selection circuit 14 generates a selection signal generated by the encoding circuit 16. Based on this, the detection signal sent from the detection circuits 131,... Connected to the output circuits 121,.

  The diagnosis unit 112 has the following functions (f112-1 ″) to (f112-2).

  (f112-1 ″) An output circuit selection function that selects one output circuit (for example, 121) among the output circuits 121 to 123 regularly or irregularly.

  (f112-2) A determination function for executing diagnosis by determining whether or not the output operation signal input by the output control unit 111 matches the detection signal that has passed through the selection circuit 14.

  The output control unit 111 has an output operation signal input function similar to that described above.

  Next, the operation of the output device with diagnosis configured as described above will be described.

  As shown in FIGS. 5 and 6, the operation of this embodiment is that the diagnosis unit 112 does not input a selection signal to the selection circuit 14 and the selection signal input to the selection circuit 14 is automatically generated by the encoding circuit 16. This is the same as in the first embodiment except that it is created. Supplementally, in the operation of the present embodiment, the period during which the selection signal is created is a period in which the output operation signal is input from the internal logic module 11 to each of the output circuits 121 to 123. It is shorter than the period in which the selection signal is generated.

  For example, the diagnostic output device 1 diagnoses the output signals of the output circuits 121 to 123 periodically or at an arbitrary timing. Here, as shown in FIG. 6A, an example of regular diagnosis will be described.

  The diagnosis unit 112 selects the diagnosis timing and the output circuits 121 to 123 that perform the diagnosis. For example, the diagnosis unit 112 sends a diagnostic pulse internal signal having a pulse waveform to the output control unit 111 with the selected output circuit 121 as a diagnosis target. . The diagnostic pulse internal signal is issued to only one output circuit at a time.

  The output control unit 111 calculates a logical product of the internal signal for normal control and the internal signal for diagnostic pulse, and inputs an output operation signal to the output circuit 121 as shown in FIG.

  In addition, at the timing when the output operation signal is input to the output circuit 121, the encoding circuit 16 selects information indicating which output circuit is to be diagnosed, as shown in FIG. Output a signal. Here, the signal line of the selection signal takes the form of a parallel bus.

  The output circuit 121 outputs an output signal having a pulse waveform to the output terminal 1c1 by receiving an output operation signal and turning on / off the signal line connecting the power source 2 and the load 3 in the same manner as a normal output signal. . The output signal is input to the detection circuit 131 simultaneously with the load 3.

  The detection circuit 131 converts the input output signal into a detection signal, and sends the detection signal to the selection circuit 14 as shown in FIG.

  The selection circuit 14 passes the detection signal received from the detection circuit 131 connected to the selected output circuit 121 by the selection signal from the coding circuit 16 as shown in FIG. 11 to send.

  The diagnosis unit 112 of the internal logic module 11 determines whether the output operation signal (FIG. 2E) input by the output control unit 111 matches the detection signal that has passed through the selection circuit 14 (FIG. 2L). Determine whether or not.

  As a result of the determination, when both match, the diagnosis unit 112 diagnoses that the pulse waveform signal sent to the output control unit 111 has returned via the output circuit 121, the detection circuit 121, and the selection circuit 14.

  The above operation is performed even when the output circuit 122 is a diagnosis target, the selection signal “1” (= 001) shown in FIG. 6B, the output operation signal shown in FIG. ) And the detection signal shown in FIG. 6 (l).

  Even when the output circuit 123 is to be diagnosed, the selection signal “2” (= 010) shown in FIG. 6B, the output operation signal shown in FIG. 6J, and FIGS. This is similarly performed using the detection signal shown in 6 (l).

  As described above, according to the present embodiment, the first embodiment has a configuration including the coding circuit 16 that codes the output operation signals individually input to the output circuits 121,. In addition to the above effect, the control of the selection signal is automatically performed by the coding circuit 16, so that the internal circuit or software design of the internal logic module 11 can be simplified.

<Fourth Embodiment>
FIG. 7 is a schematic diagram showing an output device with diagnosis and its peripheral configuration according to the fourth embodiment.

  The fourth embodiment is a modification of the first embodiment, and includes a plurality of inversion XOR circuits 171 to 173 and an AND circuit 18 instead of the selection circuit 14 shown in FIG. Further, a diagnosis operation unit 113 is provided instead of the diagnosis unit 112 shown in FIG.

  Here, the plurality of inverting XOR circuits 171 to 173 individually perform exclusive OR of output operation signals individually input to the output circuits 121 to 123 and detection signals sent from the detection circuits 131 to 133. And has a function of sending an individual diagnosis signal obtained by inverting the calculation result to the AND circuit 18. Supplementally, the inverting XOR circuit 171 outputs an individual diagnostic signal indicating a low level “Lo (zero)” when both signals are inconsistent with respect to the output operation signal for the output circuit 121 and the detection signal from the detection circuit 131. When both signals match, an individual diagnostic signal indicating a high level “Hi (1)” is output. The functions of the inverting XOR circuits 172 and 173 are the same. The “inverted XOR circuits 171 to 173” may be read as “individual diagnostic circuits 171 to 173”.

  The AND circuit 18 has a function of calculating a logical product of the individual diagnostic signals transmitted from the plurality of inverting XOR circuits 171 to 173 and transmitting a diagnostic signal indicating the calculation result to the internal logic module 11. Here, the diagnostic signal indicates a calculation result of the low level “Lo (zero)” or the high level “Hi (1)”. “AND circuit 18” may be read as “diagnostic circuit 18”.

  Accordingly, the internal logic module 11 individually inputs the output operation signal to each of the output circuits 121 to 123, while the output signal is output according to the output operation signal based on the diagnostic signal sent from the AND circuit 18. It has a function to diagnose whether it has been output.

  The diagnostic operation unit 113 in the internal logic module 11 has the following functions (f113) to (f113).

  (f113-1) An output circuit selection function for selecting one output circuit (for example, 121) among the output circuits 121 to 123 regularly or irregularly.

  (f113-2) A determination function for executing diagnosis by determining whether or not the diagnosis signal that has passed through the AND circuit 18 indicates the high level “Hi (1)”.

  As described above, the output control unit 111 has an output operation signal input function for inputting an output operation signal to the output circuits 121,... Selected by the diagnosis operation unit 113.

  Next, the operation of the output device with diagnosis configured as described above will be described.

  In the operation of the present embodiment, whether or not the output operation signal for each of the output circuits 121 to 123 and the detection signal of each of the detection circuits 131 to 133 individually match each other is determined based on each of the inverted XOR circuits 171 to 173 and the AND circuit. 18 and the diagnosis operation unit 113 are the same as in the first embodiment except that diagnosis is performed.

  For example, when the output operation signal (a) for the output circuit 121 and the detection signal (b) from the detection circuit 131 are input to the inverting XOR circuit 171, an individual diagnostic signal indicating the result of the inverting operation of the exclusive OR is obtained. It is output to the AND circuit 18.

  Specifically, when the output operation signal (a) and the detection signal (b) are in a contradictory state, the inverted XOR circuit 171 outputs the individual diagnostic signal of the low level “Lo (zero)” to the AND circuit 18. The inverting XOR circuits 172 and 173 operate similarly.

  The AND circuit 18 receives the individual diagnostic signals of the inverted XOR circuits 171 to 173, respectively. Here, when each output signal and detection signal are all normal, “1” s are multiplied together, and the AND circuit 18 sends a diagnostic signal of high level “Hi (1)” to the internal logic module 11. Output. If any output signal and the detection signal are inconsistent, the AND circuit 18 outputs a low-level “Lo (zero)” diagnostic signal to the internal logic module 11.

As a result, the diagnosis operation unit 113 in the internal logic module 11 detects each output circuit 121,. It can be considered that any one or more of the circuits 131,... Are abnormal (with respect to the time lag between the output operation signal transmission and the detection signal input due to the operation delay time of each circuit) (The dead time is secured on the logic module 11 side.)
As described above, according to the present embodiment, the configuration including the inverting XOR circuits 171 to 173, the AND circuit 18, and the diagnostic operation unit 113 enables the diagnosis of the output circuits 121 to 123 in addition to the effects of the first embodiment. Since each of the circuits 171 to 173 and 18 is automatically performed, an output device with diagnosis that can simplify the internal circuit for diagnosis or software design of the internal logic module 11 can be obtained.

<Fifth Embodiment>
FIG. 8 is a schematic diagram illustrating an output device with diagnosis and a peripheral configuration thereof according to the fifth embodiment.

  The fifth embodiment is a modification of the fourth embodiment, and includes an encoding circuit 16 and a selection circuit 14 similar to those of the third embodiment, instead of the AND circuit 18 shown in FIG. .

  Here, the encoding circuit 16 is the same as that of the third embodiment.

  The selection circuit 14 is a circuit that selectively passes one detection signal among the detection signals transmitted from the detection circuits 131 to 133, and is based on the selection signal created by the encoding circuit 16. Has a function of passing the individual diagnostic signals sent from the inverting XOR circuits 171 connected to the output circuits 121 shown by the selection signal via the detection circuits 131.

  Accordingly, the internal logic module 11 individually inputs the output operation signal to each of the output circuits 121 to 123, and on the basis of the individual diagnosis signal that has passed through the selection circuit 14, the output signal is output according to the output operation signal. It has a function to diagnose whether it has been output.

  The diagnostic operation unit 113 in the internal logic module 11 has the following function (f113-2 ') instead of the function (f113-2) described above.

  (f113-2 ') A determination function for executing diagnosis by determining whether or not the individual diagnosis signal that has passed through the selection circuit 14 indicates a high level "Hi (1)".

  Note that the output control unit 111 has an output operation signal input function similar to that of the fourth embodiment.

  Next, the operation of the output device with diagnosis configured as described above will be described.

  The operation of the present embodiment is the same as that of the fourth embodiment except that the encoding circuit 16 and the selection circuit 14 are used instead of the AND circuit 18.

  For example, the selection circuit 14 receives the individual diagnosis signals from the inverting XOR circuits 171 to 173 (the low level “Lo (zero)” when both the output signal and the detection signal contradict each other), and the both signals match. In this case, a high level “Hi (1)”) is input.

  As in the third embodiment, the encoding circuit 16 encodes the output operation signal input to each output circuit 121, and creates a selection signal. Based on the generated selection signal, the selection circuit 14 selects the individual diagnostic signal of the inverted XOR circuits 171,... Corresponding to the output circuit 121,. Is sent to the diagnostic operation unit 113.

  The diagnosis operation unit 113 executes diagnosis by determining whether or not the individual diagnosis signal indicates a high level “Hi (1)”.

  Here, in the fourth embodiment, since the diagnosis signal obtained by logical product operation of all the individual diagnosis signals is input to the diagnosis operation unit 113, the diagnosis signal of the low level “Lo (zero)” is input. In addition, it is impossible to recognize which output circuit 171 to 173 or detection circuit 131 to 133 actually detects the mismatch.

  On the other hand, in the present embodiment, the individual diagnostic signals of the inverting XOR circuits 171,... Corresponding to the output circuits 121,. For this reason, the diagnostic operation unit 113 can immediately recognize which output system the mismatch is detected as long as the diagnosis operation unit 113 knows the switching timing of the output operation signal.

  As described above, according to the present embodiment, the configuration including the encoding circuit 16 and the selection circuit 14 instead of the AND circuit 18 enables the identification of the abnormality occurrence location to be reversed in addition to the effects of the fourth embodiment. Since it is automatically performed by any of the XOR circuits 171 to 173, the encoding circuit 16 and the selection circuit 14, an output device with diagnosis capable of more accurately diagnosing an abnormality can be obtained.

<Sixth Embodiment>
FIG. 9 is a schematic diagram illustrating an output device with diagnosis and a peripheral configuration thereof according to the sixth embodiment.

  The sixth embodiment is a modification of the first embodiment. As shown in FIG. 9, an output selection circuit 19 is provided between the internal logic module 11 and the output circuits 121 to 123 shown in FIG. 1. I have.

  Here, when the integrated output operation signal including the integrated (multiplexed) output operation signal and the selection signal are input from the internal logic module 11, the output selection circuit 19 performs the integration based on the selection signal. The output operation signal separated (demultiplexed) from the output operation signal is input to the output circuit 121,... Indicated by the selection signal, while the output circuit 122,. Has the function of maintaining the output operation signal. Supplementally, the output control unit 111 ′ in the internal logic module 11 and the output selection circuit 19 are connected by a 1-bit signal line that transmits an integrated output operation signal.

  Accordingly, the internal logic module 11 inputs the integrated output operation signal to the output selection circuit 19, and on the basis of the detection signal that has passed through the selection circuit 14, has the output signal been output according to the integrated output operation signal? Has a function to diagnose whether or not.

  Here, the output control unit 111 ′ creates an integrated output operation signal by integrating the output operation signals input to the output circuits 121,... Selected by the diagnosis unit 112 ′, and selects the integrated output operation signal as an output. An output operation signal input function for inputting to the circuit 19 is provided. The integration can be executed by switching a plurality of output operation signals in a time division manner. Supplementally, the output control unit 111 ′ multiplexes a plurality of output operation signals based on the selection signal received from the diagnosis unit 112 ′ and integrates them into one output operation signal.

  The diagnosis unit 112 ′ selects one output circuit (eg, 121) among the output circuits 121 to 123 regularly or irregularly, and outputs a selection signal indicating the selected output circuit (eg, 121). It is determined whether or not the selection signal input function input to the selection circuit 19 and the selection circuit 14, the integrated output operation signal input by the output control unit 111 ′, and the detection signal that has passed through the selection circuit 14 match. Thus, it has a determination function for executing diagnosis. The selection signal input function of the diagnosis unit 112 ′ also includes a function of inputting the selection signal to the output control unit 111 ′.

  Next, the operation of the output device with diagnosis configured as described above will be described.

  The operation of this embodiment is the same as that of the first embodiment except that the internal logic module 11 inputs an integrated output operation signal and a selection signal to the output selection circuit 19 as shown in FIG.

  For example, the diagnostic output device 1 diagnoses the output signals of the output circuits 121 to 123 periodically or at an arbitrary timing. Here, as shown in FIG. 10A, an example of regular diagnosis will be described.

  The diagnosis unit 112 ′ selects the diagnosis timing and the output circuits 121 to 123 that perform the diagnosis. For example, the selected output circuit 121 is a diagnosis target, and the diagnostic pulse internal signal having a pulse waveform is output to the output control unit 111 ′. At the same time, as shown in FIG. 10B, a selection signal indicating the selected output circuit 121 is input to the output control unit 111 ′, the output selection circuit 19, and the selection circuit 14. The diagnostic pulse internal signal is issued to only one output circuit at a time. The signal line of the selection signal takes the form of a parallel bus.

  The output control unit 111 ′ calculates a logical product of the internal signal for normal control and the internal signal for diagnostic pulse, and integrates the obtained output operation signal based on the selection signal, so that FIG. 10 (ehj) An integrated output operation signal is created as shown in FIG. This integrated output operation signal is input from the output control unit 111 ′ to the output selection circuit 19.

  When the integrated output operation signal and the selection signal are input, the output selection circuit 19 selects the output operation signal separated from the integrated output operation signal based on the selection signal, as shown in FIG. While being input to the output circuit 121,... Indicated by the signal, the output operation signal in a state where the output signal is not output to the output circuit 122,.

  The output circuit 121 outputs a pulse waveform output signal to the output terminal 1c1 by turning on / off a signal line connecting the power source 2 and the load 3 in accordance with the input output operation signal. The output signal is input to the detection circuit 131 simultaneously with the load 3.

  The detection circuit 131 converts the input output signal into a detection signal, and sends the detection signal to the selection circuit 14 as shown in FIG.

  The selection circuit 14 allows the detection signal received from the detection circuit 131 connected to the selected output circuit 121 to pass through the internal logic module, as shown in FIG. 11 to send.

  The diagnosis unit 112 ′ determines whether or not the integrated output operation signal (FIG. 10 (ehj)) input by the output control unit 111 ′ matches the detection signal (FIG. 10 (l)) that has passed through the selection circuit 14. Determine.

  As a result of this determination, when the two match, the diagnosis unit 112 ′ diagnoses that the pulse waveform signal sent to the output control unit 111 ′ has returned via the output circuit 121, the detection circuit 121, and the selection circuit 14. .

  In other words, the internal logic module 11 outputs a multiplexed output operation signal (integrated output operation signal) and receives a multiplexed detection signal. The diagnosis unit 112 ′ can recognize in which output system the mismatch is detected by confirming the coincidence of both multiplexed signals.

  The above operation is performed even when the output circuit 122 is a diagnosis target, the selection signal “1” (= 001) shown in FIG. 10B, the integrated output operation signal shown in FIG. i) and the detection signal shown in FIG. 10L are similarly executed.

  Further, even when the output circuit 123 is a diagnosis target, the selection signal “2” (= 010) shown in FIG. 10B, the integrated output operation signal shown in FIG. 10Ehj, and FIGS. The same processing is performed using the detection signal shown in FIG.

  As described above, according to the present embodiment, the signal path between the internal logic module 11 and the output selection circuit 19 is achieved by the configuration including the output selection circuit 19 between the internal logic module 11 and the output circuits 121 to 123. In this period, signal contact cannot occur. Therefore, according to the present embodiment, in addition to the effects of the first embodiment, the possibility of signal contact between the internal logic module 11 and the output selection circuit 19 can be reduced.

<Seventh Embodiment>
FIG. 11 is a schematic diagram illustrating an output device with diagnosis and a peripheral configuration thereof according to the seventh embodiment.

  The seventh embodiment is a modification of the sixth embodiment, and includes an output wheel number selection circuit 1a instead of the output selection circuit 19 shown in FIG.

  Here, the output wheel number selection circuit 1a separates (demultiplexes) the output operation signal from the integrated output operation signal composed of the integrated (multiplexed) output operation signals, and outputs the separated output operation signals to the output circuits 121. Are input to one of the output circuits 121,..., And switch the output circuit 121 to which the output operation signal is input based on the switching signal input from the diagnosis unit 112 ′. On the other hand, the output circuits 122 to which no output operation signal is input has a function of maintaining the output operation signal in a state in which the output signal is not output.

  Accordingly, the internal logic module 11 inputs an integrated output operation signal to the output wheel number selection circuit 1a, and outputs an output signal according to the integrated output operation signal based on the detection signal that has passed through the wheel number selection circuit 15. It has a function of diagnosing whether or not it has been done.

  Here, the output control unit 111 ′ creates an integrated output operation signal by integrating the output operation signals input to the output circuits 121,... Selected by the diagnosis unit 112 ′, and outputs the integrated output operation signal as an output wheel number. It has an output operation signal input function for inputting to the selection circuit 1a. The integration can be executed by switching a plurality of output operation signals in a time division manner. Supplementally, in the output control unit 111 ′, a plurality of output operation signals are multiplexed based on the switching signal received from the diagnosis unit 112 ′ by using a parallel input-serial output shift register mechanism. Integrated into output operation signal.

  The diagnosis unit 112 ′ selects one output circuit (for example, 121) among the output circuits 121 to 123 regularly or irregularly, and a switching signal indicating the selected output circuit (for example, 121) with a rotation number. Is input to the output wheel number selection circuit 1a and the wheel number selection circuit 15, whether the integrated output operation signal input by the output control unit 111 ′ matches the detection signal that has passed through the wheel number selection circuit 15 or not. By determining whether or not, a determination function for executing diagnosis is provided. The switching signal input function of the diagnosis unit 112 ′ also includes a function of inputting the switching signal to the output control unit 111 ′.

  Next, the operation of the output device with diagnosis configured as described above will be described.

  As shown in FIG. 11, the operation of this embodiment is the same as that of the sixth embodiment, except that the output circuit 121,.

  For example, as shown in FIG. 10 (b ′), the diagnosis unit 112 ′ issues a switching signal for switching the output circuits 121 to 123 to be diagnosed by the rotation number, and outputs the switching signal to the output control unit 111 ′. This is sent to the ring number selection circuit 1a and the ring number selection circuit 15. The signal line for the switching signal is a 1-bit signal line that only indicates the switching timing of the wheel number.

  The output control unit 111 ′ integrates the output operation signal obtained by calculating the logical product of the above-described internal signal for normal control and the internal signal for diagnosis pulse based on the switching signal, so that FIG. As shown, an integrated output operation signal is created. This integrated output operation signal is input from the output controller 111 'to the output wheel number selection circuit 1a.

  When the integrated output operation signal and the switching signal are input, the output wheel number selection circuit 1a receives the input of the output operation signal separated from the integrated output operation signal based on the switching signal, as shown in FIG. While the previous output circuits 121,... Are switched by a wheel number, the output operation signals in a state in which no output signals are output are maintained in the output circuits 122,.

  The output circuit 121 outputs a pulse waveform output signal to the output terminal 1c1 by turning on / off a signal line connecting the power source 2 and the load 3 in accordance with the input output operation signal. The output signal is input to the detection circuit 131 simultaneously with the load 3.

  The detection circuit 131 converts the input output signal into a detection signal, and sends the detection signal to the wheel number selection circuit 15 as shown in FIG.

  In response to the switching signal from the diagnosis unit 112, the ring number selection circuit 15 passes the detection signal received from the detection circuit 131 connected to the selected output circuit 121 as shown in FIG. 11 to send.

  The diagnosis unit 112 of the internal logic module 11 includes an integrated output operation signal (FIG. 12 (ehj)) input by the output control unit 111 ′ and a detection signal (FIG. 12 (l)) that has passed through the wheel number selection circuit 15. It is determined whether or not they match.

  As a result of this determination, when the two match, the diagnosis unit 112 ′ diagnoses that the pulse waveform signal sent to the output control unit 111 has returned via the output circuit 121, the detection circuit 121, and the wheel number selection circuit 15. .

  In other words, the internal logic module 11 outputs a multiplexed output operation signal (integrated output operation signal) and receives a multiplexed detection signal. It is possible to recognize whether a mismatch is detected in the output system.

  The above operation is the same as that in the sixth embodiment except that the internal logic module 11 inputs the integrated output operation signal and the switching signal to the output wheel number selection circuit 1a even when the output circuit 122 or the output circuit 123 is a diagnosis target. Is executed in the same way as

  As described above, according to the present embodiment, instead of the selection signal indicating the output circuits 121 to 123, the configuration using the switching signal for switching the output circuits 121 to 123 with the rotation number replaces the selection signal line of the parallel bus. Since the 1-bit switching signal line is used, in addition to the effect of the sixth embodiment, the number of input terminals and the circuit scale of the signal line connected to the internal logic module 11 can be further reduced.

<Eighth Embodiment>
FIG. 13 is a schematic diagram showing an output device with diagnosis and its peripheral configuration according to the eighth embodiment.

  The eighth embodiment is a modification of the first embodiment, and a plurality of output photocouplers 1b1 to 1b3 are individually provided between the internal logic module 11 shown in FIG. 1 and each of the output circuits 121 to 123. I have. Further, instead of the detection circuits 131 to 133 shown in FIG. 1, a plurality of detection photocouplers 134 to 136 are individually provided. The detection photocouplers 134 to 136 also function as the detection circuits 131 to 133 described above.

  Here, each output photocoupler 1b1,... Has a function of inputting an output operation signal to any one of the output circuits 121,... According to the output operation signal sent from the internal logic module 11.

  Each of the detection photocouplers 134 has a function of individually detecting an output signal between each of the output circuits 121,... And each of the output terminals 1c1,.

  Accordingly, the internal logic module 11 individually sends output operation signals to the output photocouplers 1b1,..., While the output signal is output in accordance with the output operation signal based on the detection signal that has passed through the selection circuit 14. It has a function to diagnose whether it has been output.

  The output control unit 111 in the internal logic module has a function of sending an output operation signal to the output photocouplers 1b1,... Connected to the output circuits 121,.

  The diagnosis unit 112 in the internal logic module selects one output circuit among the output circuits 121,... Regularly or irregularly, and sends a selection signal indicating the selected output circuit 121,. It has a selection signal input function.

  Further, the diagnosis unit 112 has a determination function for executing diagnosis by determining whether or not the output operation signal sent from the output control unit 111 matches the detection signal that has passed through the selection circuit 14.

  Next, the operation of the output device with diagnosis configured as described above will be described.

  In the operation of the present embodiment, the output operation signals sent from the output control unit 111 are individually input to the output circuits 121,... Via the output photocouplers 1b1,. Are detected by the detection photocouplers 134,... And the detection signal is input to the selection circuit, as shown in FIG.

  That is, in the present embodiment, the output circuits 121 to 123 and the output terminals 1c1 to 1c3 are electrically insulated from the internal logic module 11 by the configuration including the output photocouplers 1b1 to 1b3 and the detection photocouplers 134 to 136. The For this reason, the wiring between the internal logic module 11 and the output photocouplers 1b1 to 1b3 and between the internal logic module 11 and the detection photocouplers 134 to 136 can be electrically separated from the influence outside the apparatus.

  As described above, according to the present embodiment, the configuration including the output photocouplers 1b1 to 1b3 and the detection photocouplers 134 to 136, in addition to the effects of the first embodiment, the electrical from the power source 2 and the load 3 side. By reducing the influence, the probability of misdiagnosis can be reduced.

  According to at least one embodiment described above, a multi-input one-output selection circuit 14, a ring number selection circuit between each detection circuit 131-133 (or each detection photocoupler 134-136) and the internal logic module 11. The configuration including 15 or the AND circuit 18 can reduce the possibility of signal contact between the detection circuit and the internal logic, and can reduce the number of input terminals and the circuit scale between the detection circuit and the internal logic.

  Note that the methods described in the above embodiments are, as programs that can be executed by a computer, magnetic disks (floppy (registered trademark) disks, hard disks, etc.), optical disks (CD-ROMs, DVDs, etc.), magneto-optical disks. (MO), stored in a storage medium such as a semiconductor memory, and distributed.

  In addition, as long as the storage medium can store a program and can be read by a computer, the storage format may be any form.

  In addition, an OS (operating system) running on a computer based on an instruction of a program installed in the computer from a storage medium, MW (middleware) such as database management software, network software, and the like realize the above-described embodiment. A part of each process may be executed.

  Furthermore, the storage medium in each embodiment is not limited to a medium independent of a computer, but also includes a storage medium in which a program transmitted via a LAN, the Internet, or the like is downloaded and stored or temporarily stored.

  Further, the number of storage media is not limited to one, and the case where the processing in each of the above embodiments is executed from a plurality of media is also included in the storage media in the present invention, and the media configuration may be any configuration.

  The computer in each embodiment executes each process in each of the above embodiments based on a program stored in a storage medium, and a single device such as a personal computer or a plurality of devices are connected to a network. Any configuration of the system or the like may be used.

  In addition, the computer in each embodiment is not limited to a personal computer, and includes an arithmetic processing device, a microcomputer, and the like included in an information processing device, and is a generic term for devices and devices that can realize the functions of the present invention by a program. Yes.

  In addition, although some embodiment of this invention was described, these embodiment is shown as an example and is not intending limiting the range of invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

  DESCRIPTION OF SYMBOLS 1 ... Output device with diagnosis, 2 ... Power supply, 3 ... Load, 11 ... Internal logic module, 111 ... Output control part, 112 ... Diagnosis part, 113 ... Diagnosis operation part, 121-123 ... Output circuit, 131-133 ... Detection Circuits 134 to 136... Detection photocouplers 14... Selection circuit 15... Rotation number selection circuit 16... Coding circuit 171 to 173 ... inverted XOR circuit 18. Selection circuit, 1b1 to 1b3... Output photocoupler, 1c1 to 1c3.

Claims (8)

A plurality of output terminals for individually outputting a plurality of output signals;
A plurality of output circuits for outputting output signals to any one of the output terminals according to the input output operation signals individually;
A plurality of detection circuits that individually detect output signals between the output circuits and the output terminals and send detection signals;
A selection circuit that selectively passes one detection signal out of the detection signals transmitted from each detection circuit, the detection circuit connected to the output circuit indicated by the selection signal based on the input selection signal The selection circuit for passing the detection signal transmitted from the circuit;
An internal logic module for diagnosing whether an output signal is output in accordance with the output operation signal based on a detection signal that has passed through the selection circuit while individually inputting the output operation signal to each of the output circuits; With
The internal logic module is
A selection signal input module that selects one of the output circuits periodically or irregularly, and inputs a selection signal indicating the selected output circuit to the selection circuit;
An output operation signal input module for inputting the output operation signal to the selected output circuit;
A determination module that performs the diagnosis by determining whether or not the output operation signal input by the output operation signal input module matches the detection signal that has passed through the selection circuit;
An output device with diagnosis, comprising: A plurality of output terminals for individually outputting a plurality of output signals;
A plurality of output circuits for outputting output signals to any one of the output terminals according to the input output operation signals individually;
A plurality of detection circuits that individually detect output signals between the output circuits and the output terminals and send detection signals;
A wheel number selection circuit for selectively passing a detection signal received from one of the detection circuits, wherein the wheel number selection circuit switches the detection signal to be passed by a wheel number based on an input switching signal. When,
An internal logic module that diagnoses whether an output signal is output according to the output operation signal based on a detection signal that has passed through the wheel number selection circuit while individually inputting the output operation signal to each of the output circuits And
The internal logic module is
A switching signal input module that selects one output circuit among the output circuits periodically or irregularly by a wheel number, and inputs a switching signal indicating the selected output circuit to the wheel number selection circuit;
An output operation signal input module for inputting the output operation signal to the selected output circuit;
A determination module that executes the diagnosis by determining whether or not the output operation signal input by the output operation signal input module matches the detection signal that has passed through the wheel number selection circuit;
An output device with diagnosis, comprising: A plurality of output terminals for individually outputting a plurality of output signals;
A plurality of output circuits for outputting output signals to any one of the output terminals according to the input output operation signals individually;
A plurality of detection circuits that individually detect output signals between the output circuits and the output terminals and send detection signals;
An encoding circuit that extracts the input output operation signal and creates a selection signal indicating an output circuit to which the output operation signal is input by encoding the extracted output operation signal;
A selection circuit that selectively passes one detection signal of detection signals transmitted from each detection circuit, and is connected to an output circuit indicated by the selection signal based on the created selection signal The selection circuit for passing the detection signal transmitted from the detection circuit;
An internal logic module for diagnosing whether an output signal is output in accordance with the output operation signal based on a detection signal that has passed through the selection circuit while individually inputting the output operation signal to each of the output circuits; With
The internal logic module is
An output circuit selection module that selects one of the output circuits regularly or irregularly; and
An output operation signal input module for inputting the output operation signal to the output circuit selected by the output circuit selection module;
A determination module that performs the diagnosis by determining whether or not the output operation signal input by the output operation signal input module matches the detection signal that has passed through the selection circuit;
An output device with diagnosis, comprising: A plurality of output terminals for individually outputting a plurality of output signals;
A plurality of output circuits for outputting output signals to any one of the output terminals according to the input output operation signals individually;
A plurality of detection circuits that individually detect output signals between the output circuits and the output terminals and send detection signals;
A plurality of inverted XOR circuits that individually calculate exclusive OR of the input output operation signal and the transmitted detection signal, and send individual diagnostic signals obtained by inverting the calculation result;
An AND circuit for calculating a logical product of the individual diagnostic signals sent from the plurality of inverting XOR circuits and sending a diagnostic signal indicating the result of the calculation;
An internal logic module that individually diagnoses whether or not an output signal is output in accordance with the output operation signal based on a diagnosis signal sent from the AND circuit while individually inputting the output operation signal to each of the output circuits And
The internal logic module is
An output circuit selection module that selects one of the output circuits regularly or irregularly; and
An output operation signal input module for inputting the output operation signal to the output circuit selected by the output circuit selection module;
A determination module for executing the diagnosis by determining whether or not the diagnosis signal sent from the AND circuit indicates a high level;
An output device with diagnosis, comprising: A plurality of output terminals for individually outputting a plurality of output signals;
A plurality of output circuits for outputting output signals to any one of the output terminals according to the input output operation signals individually;
A plurality of detection circuits that individually detect output signals between the output circuits and the output terminals and send detection signals;
A plurality of inverted XOR circuits that individually calculate exclusive OR of the input output operation signal and the transmitted detection signal, and send individual diagnostic signals obtained by inverting the calculation result;
An encoding circuit that extracts the input output operation signal and creates a selection signal indicating an output circuit to which the output operation signal is input by encoding the extracted output operation signal;
A selection circuit for selectively passing one individual diagnosis signal out of the individual diagnosis signals transmitted from each of the inversion XOR circuits, and based on the created selection signal, an output circuit indicated by the selection signal; The selection circuit for passing an individual diagnostic signal sent from an inverting XOR circuit connected through a detection circuit;
An internal logic module that individually diagnoses whether an output signal is output according to the output operation signal based on the individual diagnosis signal that has passed through the selection circuit while individually inputting the output operation signal to each of the output circuits And
The internal logic module is
An output circuit selection module that selects one of the output circuits regularly or irregularly; and
An output operation signal input module for inputting the output operation signal to the output circuit selected by the output circuit selection module;
A determination module that executes the diagnosis by determining whether or not the individual diagnosis signal that has passed through the selection circuit indicates a high level;
An output device with diagnosis, comprising: A plurality of output terminals for individually outputting a plurality of output signals;
A plurality of output circuits for outputting output signals to any one of the output terminals according to the input output operation signals individually;
A plurality of detection circuits that individually detect output signals between the output circuits and the output terminals and send detection signals;
A selection circuit that selectively passes one detection signal out of the detection signals transmitted from each detection circuit, the detection circuit connected to the output circuit indicated by the selection signal based on the input selection signal The selection circuit for passing the detection signal transmitted from the circuit;
When an integrated output operation signal composed of an integrated output operation signal and the selection signal are input, an output circuit in which the selection signal indicates an output operation signal separated from the integrated output operation signal based on the selection signal An output selection circuit that maintains an output operation signal in a state in which the output signal is not output to the output circuit that is not indicated by the selection signal,
An internal logic module for diagnosing whether or not an output signal is output according to the integrated output operation signal based on a detection signal passing through the selection circuit while inputting the integrated output operation signal to the output selection circuit; With
The internal logic module is
A selection signal input module for selecting one of the output circuits at regular or irregular intervals and inputting a selection signal indicating the selected output circuit to the output selection circuit and the selection circuit;
An output operation signal input module that integrates output operation signals input to the selected output circuit to create the integrated output operation signal, and inputs the integrated output operation signal to the output selection circuit;
A determination module that executes the diagnosis by determining whether or not an integrated output operation signal input by the output operation signal input module matches a detection signal that has passed through the selection circuit;
An output device with diagnosis, comprising: A plurality of output terminals for individually outputting a plurality of output signals;
A plurality of output circuits for outputting output signals to any one of the output terminals according to the input output operation signals individually;
A plurality of detection circuits that individually detect output signals between the output circuits and the output terminals and send detection signals;
A wheel number selection circuit for selectively passing a detection signal received from one of the detection circuits, wherein the wheel number selection circuit switches the detection signal to be passed by a wheel number based on an input switching signal. When,
An output wheel number selection circuit that separates an output operation signal from an integrated output operation signal composed of an integrated output operation signal and inputs the separated output operation signal to one of the output circuits. Based on the switched signal, the output operation signal to which the output operation signal is input is switched by a rotation number, while the output operation signal in the state where the output signal is not output to the output circuit to which the output operation signal is not input is maintained. The output wheel number selection circuit;
A wheel number selection circuit for passing a detection signal received from one of the detection circuits, and the wheel number selection circuit for switching the detection signal to be passed by a wheel number based on an input switching signal;
An internal logic that inputs the integrated output operation signal to the output wheel number selection circuit and diagnoses whether an output signal is output according to the integrated output operation signal based on a detection signal that has passed through the wheel number selection circuit Module and
The internal logic module is
A switching signal input module that periodically or irregularly selects one output circuit of the output circuits by a wheel number, and inputs a switching signal indicating the selected output circuit to the output wheel number selecting circuit and the wheel number selecting circuit. When,
An output operation signal input module that integrates output operation signals input to the selected output circuit to create the integrated output operation signal, and inputs the integrated output operation signal to the output wheel number selection circuit;
A determination module that executes the diagnosis by determining whether or not an integrated output operation signal input by the output operation signal input module matches a detection signal that has passed through the selection circuit;
An output device with diagnosis, comprising: A plurality of output terminals for individually outputting a plurality of output signals;
A plurality of output circuits for outputting output signals to any one of the output terminals according to the input output operation signals individually;
A plurality of output photocouplers that individually input output operation signals to any of the output circuits according to the output operation signals that have been sent,
A plurality of detection photocouplers that individually detect output signals between the output circuits and the output terminals and send out detection signals;
A selection circuit that selectively passes one detection signal of detection signals transmitted from each detection photocoupler, and is connected to an output circuit indicated by the selection signal based on the input selection signal The selection circuit for passing the detection signal transmitted from the detection photocoupler;
An internal logic module that diagnoses whether an output signal is output according to the output operation signal based on a detection signal that passes through the selection circuit while individually sending the output operation signal to each output photocoupler When,
The internal logic module is
A selection signal input module that selects one of the output circuits periodically or irregularly, and inputs a selection signal indicating the selected output circuit to the selection circuit;
An output operation signal sending module for sending the output operation signal to an output photocoupler connected to the selected output circuit;
A determination module for executing the diagnosis by determining whether or not the output operation signal transmitted by the output operation signal transmission module matches the detection signal that has passed through the selection circuit;
An output device with diagnosis, comprising:

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