JPH09319479A - Connector system for card - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make a process controller compact and inexpensive by providing a connecting means with a dummy signal output means for outputting a dummy signal to an input/output card and an external operating means for operating the dummy signal output means from the outside. SOLUTION: At an input/output device 19, a sensor signal from an external sensor 4 is inputted through external wiring 7 to a terminal part 62 of a connector 2 inside the input/output device 19. This connector 2 is mounted onto an input/output card 11 by the terminal part 62 of the connector 2 and a terminal part 61 of the input/output card 11 and transmits the sensor signal from the external sensor 4 to the input/output card 11. In this case, a dip switch 21 is provided for opening/closing a parallel switch 10 for short-circuiting internal wires 71 and 71 to the connector 2 from the outside of the connector 2. Thus, in the case of testing the input/output device 19 when the external sensor 4 or the external wires 7 and 7 are not completely prepared, the parallel switch 10 can be used as a dummy input switch.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention connects an input / output card for performing predetermined input / output processing in an input / output device of a process control device for controlling a process such as a plant to an external circuit element or an external device. The present invention relates to a card connector device for input / output.

[0002]

2. Description of the Related Art FIG. 7 is a block diagram showing the configuration of an input / output device including a conventional card connector device. In FIG.
Reference numeral 9 denotes an input / output device of a process control device for controlling a process such as a plant. The input / output device 9 includes an input / output card 1 for performing a predetermined input / output process, a card connector device 206 having a connector 2 for interfacing with an external circuit element or an external device, an external circuit element or an external device. An external terminal block 3 for connecting to a device or the like and converting the level of an input / output signal is provided. The input / output card 1 includes an input / output element 5 for performing input / output, and the input / output element 5 is connected to the connector 2 by each terminal portion 61. The connector 2 is connected to the external terminal block 3 by each terminal portion 62 and the wiring 8.
The external terminal block 3 is connected to the external sensor 4 as an external circuit element by each terminal portion 63 and the external wiring 7.

Next, the operation will be described. In the card connector device 206 provided in the input / output device 9 of the process control device for controlling the process of the plant, the sensor signal from the external sensor 4 is input to the external terminal block 3 via the wiring 7 and the terminal portion 63. . The sensor signal input to the external terminal block 3 is converted to a predetermined level, input to the connector 2 via the wiring 8 and the terminal portion 62, and further input to the input / output element 5 of the input / output card 1 via the terminal portion 61. Is entered. The sensor signal input to the input / output element 5 is sent to a predetermined circuit of the process control device. If it is not necessary to convert the level of the input / output signal to / from the external sensor 4 or treat the common line (setting the reference potential), the external terminal block 3
In some cases, it becomes unnecessary.

[0004]

In the case of the conventional card connector device as described above, the input / output signal is opened / closed and the signal level of the input / output signal is converted (current to voltage).
The external terminal block is inevitably required to install the device for protecting the I / O card and the space is increased, and the wiring is also increased. There is a problem that it is difficult to realize downsizing and price reduction.

The present invention has been made in order to solve the above-mentioned problems, and makes it possible to utilize it for simulation and maintenance, and to provide input / output signal signals necessary for an input / output device of a process control device. Space can be reduced by eliminating the need for an external terminal block to control the level, etc., and wasteful wiring is not required, and the input / output signals required for the plant can be freely controlled by selecting the equipment required for the option section. An object is to obtain a card connector device that can be used.

[0006]

The card connector device according to the first aspect of the present invention outputs a simulated signal to an input / output card (input / output card 11) that makes it look as if there was an input signal from the external wiring 7, 7. The connecting means (connector 2) is provided with simulated signal output means (parallel switch 10) for making it possible and external operating means (dip switch 21) for making this simulated signal output means operable from the outside. is there.

In the card connector device according to the second aspect of the present invention, the parallel switch 10 connected in parallel between the internal wirings 71, 71 connected to the external wirings 7, 7 is provided as a simulated signal output means provided in the connector 2. It is characterized in that a DIP switch 21 that can operate the parallel switch 10 from the outside is used as an external operation means.

A card connector device according to a third aspect of the present invention is a switch with a series resistor connected in parallel between internal wirings 71, 71 connected to external wirings 7, 7 as a simulated signal output means provided in the connector 2. 13 is used, and a dip switch 21 which can operate the series resistor switch 13 from the outside is used as an external operation means.

A card connector device according to a fourth aspect of the present invention is a serial switch which is connected in series to at least one of internal wirings 71, 71 connected to external wirings 7, 7 as a simulated signal output means provided in the connector 2. 20 is used, and a dip switch 21 capable of operating the series switch 20 from the outside is used as an external operating means.

A card connector device according to a fifth aspect of the present invention is provided with a fuse that is connected in series to at least one of internal wirings 71, 71 connected to external wirings 7, 7 as a simulated signal output means provided in the connector 2. The switch 17 is used, and a dip switch 21 capable of operating the switch 17 with a fuse from the outside is used as an external operation means.

A card connector device according to a sixth aspect of the present invention is provided with an option unit 18 including a dip switch and any or all of a parallel switch, a series resistor switch, a series switch and a fuse switch.
This optional unit 18 is characterized in that it can be connected to the terminal portions A, B, C, D on the external wiring side of the connector 2.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION

Embodiment 1. Hereinafter, a first embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a configuration block diagram of an input / output device including a card connector device according to the first embodiment. In FIG. 1, reference numeral 19 denotes an input / output device of a process control device for controlling a process such as a plant. This input / output device 19 is for a card having an input / output card 11 having a digital input element 12 for performing a predetermined input process and a connector 2 as a connecting means for interfacing with an external sensor 4 as an external circuit element. Connector device 2
01. The connector 2 has external wiring 7, 7
From the input / output card 11, and the parallel switch 10 as the simulated signal output means for outputting the simulated signal as if there was an input signal from the same, and the dip switch 21 as the external operation means for enabling the parallel switch 10 to be operated from the outside.
Are provided. The parallel switch 10 provided in the connector 2 is connected in parallel between the internal wirings 71 and 71 connected to the external wirings 7 and 7 to which the external sensor 4 is connected, and is interlocked with the dip switch 21. . The parallel switch 10 is turned on / off by operating the dip switch 21. The connector 2 has a terminal portion 61
Connected to the input / output card 11 by the terminal unit 62.
Is connected to the external sensor 4. I / O card 1
An internal wiring 71 connects between the terminal portion 61 and the terminal portion 62 in the unit 1. Further, the terminal portion 62 and the external sensor 4 are connected by the external wiring 7.

Next, the operation will be described. In the input / output device 19 of the process control device for controlling the process of the plant in FIG. 1, the sensor signal from the external sensor 4 receives the external wiring 7 and the terminal portion 6 of the connector 2 in the input / output device 19.
2 is input. The connector 2 is the terminal portion 6 of the connector 2.
1 and the terminal portion 61 of the input / output card 11 are mounted on the input / output card 11 and transmit a sensor signal from the external sensor 4 to the input / output card 11. Internal wiring 7 to connector 2
By providing the parallel switch 10 for short-circuiting 1 and 71, and the DIP switch 21 capable of opening and closing the parallel switch 10 from outside the connector 2, the external sensor 4
Is not ready, or when the external wiring 7, 7 is not ready, when the input / output device 19 is tested,
The parallel switch 10 can be used as a simulated input switch. This parallel switch 10 is a story at the time of starting the plant. However, even if the plant is started up and operating, if the external sensor 4 is broken, the operator can judge the forced signal input switch in order to advance the sequence. Since it can also be used as an effective means for simulation at the time of plant start-up and maintenance at the time of plant operation, the parallel switch 10 can be used.
Since it is built in the connector 2, it is not necessary to prepare a terminal block, a switch, and wiring for connecting the terminals to the outside.
01 can be obtained.

Embodiment 2 FIG. In the first embodiment described above, the case where the simulated signal can be input to the input / output card 11 by providing the parallel switch 10 and the dip switch 21 as shown in FIG. 1 has been described. In mode 2, as shown in FIG. 2, when the signal of the input / output card 11 is an analog signal and the internal element of the input / output card 11 is the analog input / output element 14, the card connector device 2
No parallel switch 10 inside connector 02
Switch 13 with series resistor (switch 13a and resistor 1
3b) is connected between the internal wirings 71, 71 to convert a current signal into a voltage signal. For example, assuming that the resistance value of the resistor 13b of the switch 13 with series resistance is 250Ω, the current signal 4 to 20 mA is converted to the voltage signal 1
Can be converted to ~ 5v. The series resistor switch 13 is a dip switch 21 provided outside the connector 2.
It can be opened and closed by the dip switch 21. If the switch 13 with a series resistor is selected on the open side by the dip switch 21, for example, the current signals 4 to 2
It is also possible to input and output as 0 mA. Analog I / O card 1 according to the type or type of external sensor 4
Connector 2 instead of selecting 1 input / output signal level
A flexible card connector device 202 can be obtained because the internal serial resistance switch 13 and the external dip switch 21 can be opened and closed.

As described above, according to the second embodiment, the flexible card connector device as described above can be obtained, and it can be utilized as an effective means for simulation and maintenance and process control. The conventional external terminal block for controlling the signal level of the input / output signals required for the input / output device of the device is not required, and the space can be reduced, and unnecessary wiring is not required. The price can be increased.

Embodiment 3 In the first embodiment, the switch 10 and the dip switch 2 are used as shown in FIG.
Although the case where the simulated signal can be input to the input / output card 15 by providing 1 is described, in the third embodiment, the signal of the input / output card 15 is input / output as a digital signal as shown in FIG. When the internal element of the card 15 is the digital input / output element 16, the serial switch 20 inside the connector 2 of the card connector device 203 is connected to the internal wiring 71,
Instead of short-circuiting 71, the output signal of the input / output card 15 is attached by mounting the output signal in a signal direction for opening / closing (series to one internal wiring 71) and opening / closing the external DIP switch 21 that works in conjunction with the series switch 20. It is possible to select for each signal that output or cut can be freely controlled according to the operator's judgment according to the state of the plant (during operation or at rest). There is. Therefore, it is possible to obtain a card connector device 203 capable of controlling signals, not just a connector between the input / output card 15 and the external sensor 4.

As described above, according to the third embodiment, it is possible to select each signal as described above, and
It can be used as an effective means for simulation and maintenance, and it does not require a conventional external terminal block that controls the signal level of the input / output signals required for the input / output device of the process control device, thus saving space. As a result, wasteful wiring is unnecessary, and the process control device can be downsized and the cost can be reduced.

Embodiment 4 In the first embodiment, the parallel switch 10 and the dip switch 21 are provided as shown in FIG. 1, so that the simulated signal can be input to the input / output card 11. In the form 4, as shown in FIG. 4, when the signal of the input / output card 15 is a digital signal and the internal element of the input / output card 15 is the digital input / output element 16, the signal direction for opening / closing the output signal to / from the connector 2 (one internal wiring By providing the switch 17 with a fuse (in series with 71) and the dip switch 21 for opening and closing the switch 17 with a fuse outside, not only the output signal can be opened and closed,
The input / output card 15 and the digital input / output element 16 can be protected when an abnormal signal such as an external surge comes in. Further, it is possible not only for the operator to output or cut an output signal using the switch means at the connector 2, but also to obtain a more effective function as a card connector device with a card protection device.

As described above, according to the fourth embodiment, it is possible to obtain the card connector device with the card protection device as described above, and it can be utilized as an effective means for simulation and maintenance.
The external terminal block that controls the signal level of the input / output signals required for the input / output device of the process control device is no longer required, and the space can be reduced, and unnecessary wiring is not required. Also, the price can be reduced.

Embodiment 5. In addition, the contents described in the first to fourth embodiments are similar to those in the connector 2 in which a switch, a resistor,
Although it has been described that a fuse is provided in advance and a DIP switch 21 attached to the surface (external) of the connector 2 can freely open and close an internal switch to obtain a versatile card connector device, the fifth embodiment will be described.
Then, for example, as shown in the perspective view of FIG. 5 and the block diagram of FIG. 6, the terminal portions A and B on the external wiring side of the connector 2 are shown.
Alternatively, the terminal units A and C or the terminal units B and D are provided with a structure in which the option unit 18 having a required function can be mounted at the terminal unit 64, respectively.
It is possible to further increase the degree of freedom by preparing various functions (parallel switch, switch with series resistance, series switch, switch with fuse) described in 4 in the option unit 18. In this case, it is of course possible to select and attach one by one to the conventional connector or terminal block or to attach the card unit.

[0021]

As described above, according to the first aspect of the present invention, the simulated signal output means for outputting the simulated signal to the input / output card, and the external operation means for enabling the simulated signal output means to be operated from the outside. Since it is configured as a connection means, it can be used as an effective means for simulation during plant startup and maintenance during plant operation, and the signal level of the input / output signal required for the input / output device of the process control device Since there is no need for an external terminal block as in the prior art for controlling the above, the space can be reduced, and wasteful wiring is also unnecessary. This has the effect of reducing the size and cost of the process control device.

According to the second aspect of the present invention, since the parallel switch is used as the simulated signal output means and the dip switch is used as the external operation means, it is used for simulation at the time of starting the plant and for maintenance at the time of operating the plant. Not only can it be used as an effective means, but it also saves space by eliminating the need for an external terminal block like the conventional one that controls the signal level of the input / output signals required for the input / output device of the process control device, and unnecessary wiring is also unnecessary. Next to
As a result, there is an effect that the process controller can be downsized and the cost can be reduced.

According to the third aspect of the invention, since the switch with the series resistance is used as the simulated signal output means and the dip switch is used as the external operation means, it is possible to select for each signal and to set the signal. It can be used as an effective means for simulation at the time of raising and for maintenance at the time of plant operation, and does not require the conventional external terminal block to control the signal level of the input / output signal required for the input / output device of the process control device. As a result, the space can be reduced, and unnecessary wiring is not required. This has the effect of reducing the size and cost of the process control device.

According to the fourth invention, since the serial switch is used as the simulated signal output means and the dip switch is used as the external operation means, the card connector device with the card protection device can be obtained, and It can be used as an effective means for simulation at the time of plant startup and maintenance during plant operation, and it also controls the signal level of the input / output signals required for the input / output device of the process control device. Since the terminal block is not required, the space can be reduced, and unnecessary wiring is not required. Therefore, there is an effect that the process controller can be downsized and the cost can be reduced.

According to the fifth aspect of the invention, since the switch with the fuse is used as the simulated signal output means and the dip switch is used as the external operation means, the card connector device with the card protection device can be obtained. ,
An external terminal block that can be used as an effective means for simulation when starting the plant and for maintenance when operating the plant, and controls the signal level of the input / output signals required for the input / output device of the process control device. Is unnecessary, the space can be reduced, and useless wiring is also unnecessary. Therefore, there is an effect that the process control device can be downsized and the cost can be reduced.

According to the sixth aspect of the present invention, an optional unit including any or all of a parallel switch, a switch with a series resistor, a series switch and a switch with a fuse and a DIP switch is provided, and this optional unit is externally wired to a connector. Since it can be connected to the terminal part on the side, there is an effect that the input / output signals necessary for the plant can be freely controlled.

[Brief description of drawings]

FIG. 1 is a configuration block diagram of an input / output device including a card connector device according to a first embodiment of the present invention.

FIG. 2 is a configuration block diagram of an input / output device including a card connector device according to a second embodiment of the present invention.

FIG. 3 is a configuration block diagram of an input / output device including a card connector device according to a third embodiment of the present invention.

FIG. 4 is a configuration block diagram of an input / output device including a card connector device according to a fourth embodiment of the present invention.

FIG. 5 is a perspective view of a card connector device according to a fifth embodiment of the present invention.

FIG. 6 is a configuration block diagram of an input / output device including a card connector device according to a fifth embodiment of the present invention.

FIG. 7 is a configuration block diagram of an input / output device including a conventional card connector device.

[Explanation of symbols]

2 connectors, 4 external sensors (external line elements), 7
External wiring, 10 parallel switches (simulated signal output means),
11, 15 I / O card, 12, 16 Digital I / O element, 13 Switch with series resistance (simulated signal output means), 13a, 17a switch, 13b Resistance, 14
Analog I / O element, 17 Fuse switch (simulated signal output means), 17b fuse, 18 option unit, 19 I / O device, 20 Series switch (simulated signal output means), 21 DIP switch (external operation means), 61, 62 , 64, A, B, C, D terminal section, 71 internal wiring.

Claims (6)

[Claims] 1. A card connector provided with a connector for connecting an input / output card for performing input / output processing of an input / output device and an external wiring to which an external circuit element or the like is connected, or a connecting means including a terminal block. In the device, a simulation signal output means for outputting a simulation signal to the input / output card that makes it look as if there was an input signal from the external wiring, and an external operation means for operating the simulation signal output means from the outside are provided. A card connector device characterized by being provided in a connecting means. 2. A parallel switch connected in parallel between internal wirings connected to the external wiring is used as the simulated signal output means provided in the connection means, and the parallel switch is externally operated as the external operation means. 2. The card connector device according to claim 1, wherein a dip switch that can be used is used. 3. A switch with a series resistor connected in parallel between internal wirings connected to the external wiring is used as the simulated signal output means provided in the connecting means, and a switch with the series resistor is used as the external operating means. 2. The card connector device according to claim 1, wherein a DIP switch that can be operated from the outside is used. 4. A serial switch connected in series to at least one of internal wirings connected to the external wiring is used as the simulated signal output means provided in the connecting means, and the serial switch is externally used as the external operating means. 2. The card connector device according to claim 1, wherein a DIP switch that can be operated from the above is used. 5. A switch with a fuse connected in series to at least one of internal wirings connected to the external wiring is used as the simulated signal output means provided in the connecting means, and the switch with a fuse is used as the external operating means. 2. The card connector device according to claim 1, wherein a DIP switch that can be operated from the outside is used. 6. An option unit including any or all of the parallel switch, the series resistor switch, the series switch, and the fuse switch and the DIP switch is provided, and the option unit is externally wired to the connector. The card connector device according to claim 2, 3, 4 or 5, wherein the card connector device is connectable to a terminal portion on the side.