JPH03176798A - Transmitter - Google Patents

Abstract

PURPOSE:To attain highly developed diagnosis and to provide a transmitter with a diagnostic function and a restoring function without applying load to a CPU in a body part by diagnosing the function of the body part and outputting a diagnostic result by a diagnostic means in an option part connected to the body part. CONSTITUTION:When the operation of a multiplier/divider 13 in the body part 10 is diagnosed, a multiplier/divider diagnostic command and data necessary for diagnostic operation are sent from a CPU 21 in the option part 20 to a CPU 11 in the body part 10 and these data are sent to the multiplier/divider 13 to execute test operation. The operated result is sent to the CPU 21, which decides whether the operation is normally executed or not, and when the opera tion is normal, ends the diagnosis. At the time of abnormal diagnosis, the multiplier/divider 13 is disconnected from the processing and the CPU 11 is substituted for the multiplier/divider 13 to execute the processing. In the case of when an EEPROM 11 in the body part 10 is diagnosed, a diagnostic command is similarly sent from the CPU 21 to the CPU 11, prescribed data are written/ read out in/from the ROM 12 by the CPU 11, and when the ROM 12 is abnor mal, a RAM 23 is substituted from the ROM 12 to execute processing.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a transmitter that converts a detection signal input from a sensor into a predetermined measurement signal and sends it out, and particularly relates to a portion that diagnoses the function of the transmitter itself. is separated as an optional part,
This invention relates to a transmitter that can be attached to and detached from the transmitter body.

[Prior Art] Conventionally, when diagnosing the function of a transmitter itself, the function diagnosis is executed by the transmitter's own CPU, and if there is an abnormality in the function, this is displayed externally. .

[Problem to be Solved by the Invention] In the conventional transmitter described above, the CPU spends most of its capacity to execute the operation of the transmitter itself, and the capacity that can be used for the self-diagnosis function is insufficient. It was something. Therefore, it was not possible to provide advanced self-diagnosis functions.

Furthermore, when a malfunction occurs in a transmitter, there is no means for restoring the transmitter's operation by taking over the function that has become abnormal, as it would be costly, and the transmitter does not have a self-diagnosis function. It only displayed externally that a malfunction had occurred.

[Means for Solving the Problems] The present invention includes a main unit that converts a detection signal input from a sensor into a predetermined measurement signal and sends it out, and an optional unit that sends and receives signals to and from the main tree. The optional part is detachably attached to the main body, and has a diagnostic means for diagnosing the functions of the main body and outputting the diagnosis results, and a substituting means for performing the functions of the main body according to the diagnosis results. are doing.

[Function] The function of the main body is diagnosed by the diagnostic means of the optional part connected to the main body, the diagnosis result is output, and the proxy means takes over the function of the main body in which the abnormality has occurred in accordance with the diagnosis result. This will restore the functionality of the main unit.

Since the option section is provided detachably from the main body, functions of a plurality of main body sections can be diagnosed with one option section.

[Example] Next, the present invention will be explained with reference to the drawings.

FIG. 1 is a block diagram showing an embodiment of the oscillator of the present invention, and FIGS. 2 and 3 are operational flowcharts of the same embodiment.

In FIG. 1, a main body section 10 provides the functions of a normal transmitter, and a CPU 11 on the main body side executes data processing and control operations of each section. 12 is an EEPROM that inputs and stores data from the CPU 1, and 13 is a multiplier/divider that multiplies and divides the data input from the CPU II. 14 is 1 that sends the signal input from the phototransistor PTl to the CPU 11;
10 and 15 are drivers for sending signals input from the CPU II to the photodiode PDI.

The main body 10 also has a power supply 2 supplied from the outside, for example,
It is designed to operate on DC24V.

On the other hand, the option section 20 provides a diagnostic function and a recovery function, and the above functions are realized by the CPU 21 on the option side. 22 is a ROM that stores programs and data for executing diagnostic operations and recovery operations; 23 is an EEPROM of the main body 10;
24 is a driver that sends a signal input from the CPU 21 to the photodiode PD2. 25 is an i10 section that sends a signal input from the phototransistor PT2 to the CPU 21.

Further, the option section 20 has a battery power source (not shown), and the option section 20 is operated by this power source, and the RAM 2B is backed up by this battery power source. 20 has a removable structure, and when installed, phototransistors PTI, PT2 and photodiodes PDI, which face each other, are installed.
Signals are sent and received through a photocoupler type interface section configured by the PD2.

Next, the operation of diagnosing the transmitter configured as described above will be explained.

The operation of the multiplier/divider diagnosis will be explained with reference to the flowchart in FIG. First, the CPU 21 on the option side sends a multiplier/divider diagnostic command to the CPU 1.1 on the main body side and the data necessary for this diagnostic operation to the driver 24. The signal is transmitted through the path of photodiode PD2, phototransistor PT, and I10 section 14 (step 101).

The CPU 11 on the main body side, which receives the multiplier/divider diagnosis command,
At the same time, the receiver sends the received diagnostic data to the multiplier/divider 13 and causes the multiplier/divider 13 to execute a test operation (step 102>, and sends the result of this operation to the CP-U 21 through the driver 15, photodiode PDI, The signal is transmitted through the phototransistor PT2.I10 section 25 (step 103).

The CPLJ 21 receives the multiplication/division operation result and judges whether the multiplication/division operation was performed normally, that is, whether or not the multiplier/divider 13 of the main body 10 operated normally (step 104). If “Y”, the process ends, and if “N”, a diagnosis result indicating that the operation of the multiplier/divider 13 is abnormal is sent to the CPU 11. As a result, the multiplier/divider 13 that has been diagnosed as abnormal is separated from the processing by the CPU II, and from now on, the CPU 21 itself operates on behalf of the multiplier/divider 13 (step 105).

Next, referring to the flowchart in Figure 3,
Explain the operation of diagnosing. First, the option side CP
E F, P from U2 L to CPU II on the main body side
A ROM diagnosis command is sent through the same route as in FIG. 2 (step 201).

The CPU on the main body side that receives the EEPROM diagnosis command],
1 writes and reads predetermined test data to and from the EEPROM 12, checks whether the write and read operations were successfully executed, and sends the results to the CPU 21 (step 202).

After receiving this result, the CPU 21 stores the EEPROM 1.
Step 203) determines whether EEPROML2 is normal or not. If it is ry, the process ends, and if it is "N", a diagnostic result indicating that EEPROML2 is abnormal is sent to cpUll, and from now on, the option section 20 is RAM23 to EEPROM1
Notify the CPU II that it will be used instead of 2. As a result, EEPROM12 diagnosed as abnormal is CPtJ
RA that is separated from processing by ll and backed up by a battery (not shown) of the option unit 20.
M23 is used instead of EEPROM 12 of main body 10 (step 204).

As explained above, the main body section 10 and the option section 20 are configured to be detachable, so when diagnosing the main body section 10, it is possible to diagnose a plurality of main body sections 10 using one option section 20. can. In addition, if the option unit 10 diagnoses that the function of the main body 10 is abnormal, the CPU 21 and RAM 2:3 of the option unit 20
etc., take over the function that has become abnormal in the main body section 10, so that the main body section 10 can be recovered from the abnormal state.

In addition, in the embodiment described above, the multiplier/divider 13 and E
Although the case where an abnormality occurs in the EPROM 12 has been described, the present invention is not limited to this, and it goes without saying that diagnosis and functions can be performed on behalf of each device in the main body 10 in exactly the same manner.

[Effects of the Invention] As explained above, according to the transmitter of the present invention, the function of the main body is diagnosed by the diagnostic means of the optional part connected to the main body and the diagnosis result is output. Advanced diagnosis can be performed without putting a load on the CPU. Furthermore, the function of the main body section can be restored by the acting means acting on behalf of the function of the main body section in which the abnormality has occurred in accordance with the diagnosis result output from the diagnostic means of the optional section. In addition, since the option part is detachably attached to the main body, it is possible to diagnose the functions of multiple main parts with one option part, so the diagnostic function and recovery function can be performed without increasing the cost of the main body. can be provided.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing one embodiment of the oscillator of the present invention, and FIGS. 2 and 3 are operational flowcharts of the same embodiment. 10-- Main body part, 20... Option part. Figure 2 Figure 3

Claims (1)

[Scope of Claims] A transmitter comprising a main body that converts a detection signal input from a sensor into a predetermined measurement signal and sends it out, and an optional part that sends and receives signals to and from the main body, the transmitter comprising: The option section is detachably attached to the main body, and includes a diagnostic means for diagnosing the function of the main body and outputting a diagnosis result, and a substituting means for performing the function of the main body according to the diagnosis result. Characteristic transmitter.