JPH0496103A - Electronic control wiring device - Google Patents

Abstract

PURPOSE:To construct an optimal system in accordance with a desired wiring system by providing a connecting part for serial signal transmission on an I/O module, coupling this connecting part and connecting in parallel each I/O module. CONSTITUTION:An input/output module (I/O module) 30 is connected between a front unit 40 and a back unit 42, and mounted on a DIN rail 44 in this state. A serial data transmission line 46 transmits serially input data and output data controlled by a main controller 10, etc. Also, a connecting part 36 for serial signal transmission is provided on the I/O module 30, and by coupling this connecting part 36, each I/O module 30 is connected in parallel. In such a way, the system can be constituted in accordance with a desired wiring scale, and not only the system is optimized, but also it is possible to cope flexibly with a change of the system.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an electronic control wiring device used, for example, in NC machine tools, automatic assembly machines, sequence controllers, and the like.

[Prior Art] FIG. 4 is a block diagram showing a conventional electronic control wiring device.

In the figure, 10 is a main controller as a base unit, which controls human output signals of, for example, a machine tool according to an automatic operation program. 12 is serial/parallel (
S/P) interface converts the parallel data output from the main controller 10 into serial data and outputs it to the subsequent stage, and converts the serial data manually input from the latter stage into parallel data and outputs it to the main controller 10. Enter. 14 and 16 are I10 terminal units, for example 5W18
Input/output devices such as a motor 20 or a solenoid valve 22 are connected. Input/output modules 24 are mounted on these input/output devices in one-to-one correspondence, and each input/output module 24 controls the respective input/output devices.

In the above configuration, the parallel input/output signals of the main controller 10 are converted into serial output signals by the S/P interface 12 and transmitted to the I10 terminal unit 14.16. Such serial transmission achieves a reduction in the number of wiring lines.

In addition, one I10 terminal unit 14 or 16
The slot position and the number of slots in which the input/output module 24 can be mounted are predetermined, and serial data is processed according to the number. Serial data exceeding a predetermined number are sequentially sent to the next stage 110 terminal.

[Problem to be solved by the invention] However, in the conventional electronic control wiring device as described above, the maximum number of input/output modules that can be connected to the I10 terminal unit is, for example, 4 points, 8 points,
Since it is in a predetermined format such as 16 points, etc., it was necessary to construct the system with consideration to backups such as changes and expansions of the wiring system. Therefore, the system includes unused points from the beginning, and there is a problem in that it is not possible to construct an optimal system without waste.

In addition, if the number of reserves is exceeded due to system changes, etc.,
Either change the I10 terminal unit to a higher class, or
The flexibility and versatility of system construction required the addition of the smallest unit, the I10 terminal unit.

The present invention has been made to solve the problems of the prior art as described above, and its purpose is to provide an electronically controlled wiring device that can construct an optimal system according to a desired wiring system. .

[Means for Solving the Problems] In order to achieve the above object, an electronic control wiring device according to the present invention includes a transmission line for transmitting a serial signal and an input/output module connected in parallel to the transmission line. , in an electronic control wiring device for controlling input/output equipment connected to each input/output module using the serial signal, the input/output module is provided with a connection part for serial signal transmission, and the connection part is coupled to the input/output module. It is characterized by having input/output modules connected in parallel.

[Function] In the electronic control wiring device of the present invention having the above configuration, by connecting the input/output modules, the system can be configured according to the desired wiring scale, and it is possible to optimize the system as well as to respond to changes in the system. It becomes possible to respond flexibly.

Embodiments Hereinafter, preferred embodiments of the present invention will be described based on the drawings.

FIG. 2 is an external view showing one embodiment of an input/output module used in the electronic control wiring device of the present invention.

In the figure, the number of people module (I10 module) 3
0 is equipped with an indicator 32 for displaying operation and a wiring terminal 34 for connecting to input/output equipment.

Further, on both sides of the I10 module 3o, there are connecting portions 36 formed in the form of a socket on one side and a plug shape on the other side, and by connecting these connecting portions 36, the I10 module 3o is connected.
10 modules can be connected in parallel.

FIG. 1 is a schematic configuration diagram showing an embodiment of an electronic control wiring device according to the present invention. Note that the same or equivalent parts as in FIG. 4 are given the same reference numerals.

In FIG. 1, the I10 module 3o is connected between a front unit 40 and a back unit 42, and is mounted on a DIN rail 44 in this state. 46 is a serial data transmission line, which serially transmits manual data and output data controlled by the main controller]O, etc. The serial data transmission line 46 connects between the main controller [0] and the front unit 40 in the ]th stage, or between the hack unit 42 and the front unit 40 in the next stage, and transmits the serial data. These serial data are connected to each I10 module 30 via the connection section 36 shown in FIG. 2, and transmitted between a pair of front unit 40 and hack unit 42. Note that the serial data transmission line 46 also includes a synchronization signal required for serial transmission. This synchronization signal is generated by the timing clock generation hoard 4.
8 to an S/P interface (serial/parallel conversion board) 12.

50 is a power supply line, which connects the logic power supply of the I10 module 30 and the motor 2 connected to the I10 module 3o.
Supplies power for driving input/output devices such as 0 and so on. The power supply line 50 is connected between the power supply unit 52 and the first stage front unit 40, or between the front and rear front units 40.
I1 connected to each front unit 40
A predetermined power supply is supplied to the 0 module 30.

In the above-mentioned electronic control wiring device, the 110 number of I10 (connection terminal) of the I10 module 30 can be assigned as an address by the main controller 10 or an address unit (not shown). For example, if 32 addresses are set for one connection unit 54 and four connection units 54 are connected in cascade, a maximum of 0 to 127 addresses can be assigned to each input and output.

Furthermore, when the above wiring system is designated as (2), a wiring system (2) can be connected in the same manner. In this case, a total of 128+128=256 addresses can be assigned to each input and output of the systems (1) and (2).

FIG. 3 shows an example of the circuit of the connection unit 54 comprised of the front unit 40, I10 module 30, and back unit 42 in FIG. 1.

As shown in FIG. 3, the connection unit 54 has the same type of connection part 36 as the connection part, and the I10 module 30 can be attached and detached. You can increase or decrease the scale. Therefore, the wiring system can be optimized according to the number of input/output points, and the system can be easily changed.

The front unit 40 includes a receiver 60 and a driver 6.
Serial transmission between the front and rear stages is performed by an interface section consisting of two parts. Further, the front unit 40 is provided with a power supply circuit 64, and from this power supply circuit 64, each
Power is supplied to the 10 module 30.

The I10 module 30 is roughly divided into an output module 30a to which output devices such as the motor 20 and a solenoid are connected, and an input module 30b to which input devices such as a sensor and (limit) switch 18 are connected. The output module 30a includes an output circuit 66 for DC and AC,
A shift register 68 having one to several bits is provided between the output modules in the front and rear stages. The input module 30b has an input circuit 70 that receives signals from an input device, and a shift register 72 having one to several bits between the input modules in the front and rear stages.

The back unit 42 performs serial transmission with the next-stage front unit through an interface section consisting of receivers 74 and 76.

In the above configuration, the control data of the output device sent to the subsequent stage by serial transmission is transmitted to the back unit 42 via each 110 module 30. At this time, in the human power module 30b, the control data input from the I10 module in the previous stage is sent as is to the subsequent stage. On the other hand, in the output module 30a, control data is input to the shift register 68, and its output is sent to the subsequent I10 module.

Further, the input data of the input device sent to the previous stage by serial transmission is input to the shift register 72 when passing through the input module 30b, and its output is sent to the I10 module at the previous stage. On the other hand, in the output module 30a, the input data input from the I10 module at the subsequent stage is sent as is to the previous stage.

[Effects of the Invention] As explained above, according to the electronic control wiring device of the present invention, the number of connection points of input/output modules can be freely set, so that the wiring scale can be constructed arbitrarily. Therefore, it is possible to optimize the wiring system and to flexibly respond to changes in the system.

[Brief explanation of the drawing]

FIG. 1 is a schematic configuration diagram showing an embodiment of an electronic control wiring device according to the present invention, FIG. 2 is an external view showing an embodiment of an input/output module used in the electronic control wiring device of the present invention, and FIG. The figure is a circuit diagram showing one embodiment of the connection unit, and FIG. 4 is a block diagram showing a conventional electronic control wiring device. 30... Input/output module (I10 module) connection part

Claims (1)

[Claims] A transmission line that transmits a serial signal and an input/output module connected in parallel to the transmission line, and the input/output device connected to each input/output module in accordance with the serial signal. An electronic control wiring device for controlling the input/output modules, characterized in that the input/output modules are provided with connection parts for serial signal transmission, and the input/output modules are connected in parallel by connecting the connection parts. .