JPS5816317A - Input and output module - Google Patents

Abstract

PURPOSE:To increase flexibility when a system is expanded, by actuating selectively an input/output module containing a prescribed number of inputs and outputs. CONSTITUTION:External connectors 34, etc. are provided to a front panel 31 of an input/output module 21. A printed circuit board 35 contains connecting patterns printed on both surfaces. The edge contacts 37A and 37B are provided at the end part of the board 35 for connection of a connector 23. A selecting signal terminal is set at a part of the edges 37A and 37B to supply the selecting signal which is transmitted from an arithmetic process module. Thus the module 21 is selectively actuated. In such a way of formation of the module 21, flexibility is increased when a system is expanded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an output module of a computer system, such as a sequence controller.

It is desirable that the human output module in this type of comviator system be capable of expanding the number of human output points to be transferred, be easy to handle, be highly flexible, and be compact.For example, the sequence controller to which the present invention is applied is As shown in FIG. 2, it consists of a plurality of input/output modules 12 unitized in a housing 11, a memory module 1s, a CPU module 14, and a power supply @16, and the modules are connected in a bus configuration. The system is based on a line payment system. In general, the specifications of input/output modules are determined according to the scale of the system, such as the number of input/output points, and the electrical specifications, such as voltage and current values.
The required number of objects can be accommodated in the casing 11K.

In general, the input/output module 12 is configured in units of 8 points, JI or 16 points, even if the electrical specifications handled by the input/output module 12 are different.
The system configuration is such that data is exchanged with the PU module 14. Incidentally, due to recent improvements in the performance of semiconductor devices and the handling of bulky voltages and currents, it has become possible to downsize some modules of this type of computer system. However, for example, in a conventional system in which the input/output points accommodated by the input/output module 12 are grouped together in 8-point units, the input/output points are doubled because the input/output module 12 does not accommodate 16 input/output points. When trying to accommodate points, case 11
This has the disadvantage that the storage space for the input/output module 12 is doubled. Moreover, the conventional system cannot accommodate input/output modules having 8-point and 1-point input/output points, and lacks the flexibility to expand the system.

An object of the present invention is to eliminate such drawbacks by selecting a set of human power or output and inputting it into an arithmetic processing module.
! It is possible to increase the number of input points or output points that can be accommodated in a 4B1 set electrically as well as space.
Even if the number of input points or output points in one set is different,
Substantially the same Kk! from the arithmetic processing module! The objective is to provide a highly expandable camogie that can handle large numbers of people.

The present invention has a predetermined number of input/output points as one unit, and one or more input/output circuits to be mounted for each unit, and a plurality of input/output circuits provided in advance and implemented corresponding to the number of implementable input/output circuits. and a selection signal terminal that supplies a selection signal to the input/output circuit, and is characterized in that the implemented input/output circuit is selectively operated by the selection signal sent by the arithmetic module. . The present invention will be described below with reference to the drawings.

FIG. 2 shows a cross section when the input/output module according to the present invention is inserted into a sequence controller.

This sequence controller is an input/output module 21.
A guide rail 22 is installed inside the housing 11 to accommodate the
, a connector 23 and a path signal line wiring board 24, and when the input/output module 21 is inserted into the guide tray in the direction of the arrow 22, the edge contact of the printed wiring board will be inserted while the input/output module 31 is accommodated. is coupled to connector 28. Here, input/output module 21
The connector 23 and the path signal line wiring board 2 are configured to have twice the number of input/output points compared to the conventional one.
However, it is difficult to make the controller compatible with conventional sequence controllers in terms of shape and structure.

FIG. 3 is a perspective view of a mounting section schematically showing an example of the configuration of an input/output module according to the present invention, and FIG.
' is a sectional view of '. In this input/output module 21, a front plate 5iIIc rating display nameplate 32, an input indicator light 33, and an external connection connector 34 are arranged, and a printed wiring board 35 is a board on which connection patterns are printed on both sides and electronic components 36 are mounted. and an edge contact 37 which is connected to the connector 23 at its end.

It has 371. In the figure, on the printed wiring board 35,
Although only one electronic component 36 is shown, a large number of ICs, resistors, and capacitors forming the circuit of the input/output module 21 are mounted.

FIG. 5 is a block diagram showing the input module and external input equipment. In this human power module 21, external input devices 41A and 41B are connected via connectors 34A and 34B.
Enter s4#! Two sets of input circuits are housed on the printed wiring board SsK so that point data can be transferred to the data bus 42. In such an input circuit, the input interface circuit 43, 431 includes a divider,
Consisting of a photocoupler and a wired circuit, it converts contact data signals input by external input devices 41m and 411 into logic signals and supplies them to gate circuits 44m and 44B. Gate II 44A, 441it, CPU module (
Input interface circuit II 43A, 4 according to a selection signal sent by the edge contacts 37, 5yit (not shown) to control terminals 45, 451 of edge contacts 37, 5yit (see FIG. 3).
3B is supplied to the selector circuit 46. The selector circuit 46 is
The output signal of 4B is transferred to four path driver circuits. The four path driver circuits are driven by selection signals supplied from the OR gate circuit 4B, amplify the data signals of the contact inputs of the external input devices 41A and 41B output from the selector circuit 46, and supply the amplified data signals to the data bus 42. This data bus 42 is connected to the CPU via edge contacts 37 and 37B of the printed wiring board 35 and the connector 23.
Coupled to the module's data bus. On top of this, sea urchin,
Using the selection signal sent from the CPU module to the input module 21, the external input devices 41A and 41B can be selected and the score input data can be read through the input module 21.

FIG. 6 is a block diagram showing the output module and external output equipment. The output module 21 includes 8 contact external output devices 51A and 518, each consisting of a lamp and a renoid.
K. It has two sets of output circuits that transfer the data sent out by the CPU module, respectively, according to the specifications of the CPU module. For this reason, the output module 21
, the CPU module first connects the control terminals 45A, 4
51 K, the selection signal sent to the control terminal 52, the write pulse sent to the control terminal 52, and the NOR gate circuits 53A, 53.
mm generates a latch pulse, latch (b) [54 m,
54B is selectively driven.

Therefore, the latch circuits 54A and 54B latch the data sent by the CPU module via the data bus 42 in response to the latch pulse, and the data is transferred to the driver circuit 55.

Transfer 55BK. And driver circuits 55A, 5
5B transfers the transferred data to connectors 34A and 34B.
are supplied to external output devices 51A and 51B, respectively.

FIG. 7 is a main part wiring diagram showing the connection between the input/output module unit and the decoder of the CPU modular unit. This input/output module system 61 accommodates one snow in eight sets of input/output modules, and the wiring board 24 of each input/output module 21 is provided with two rows of connection bins 62.

Each row of connection bins 62 is connected to input/output module 21.
For example, the pin 63A of the connection pin 62 is connected to the connector 23 (see FIG. 2) corresponding to each input/output circuit.
, 63B are connected to the input/output module 2 via the connector 23.
10 control terminals 42A, 42, and also connected to the decoder 64 of the CPIJ module by 16 selection lines, so that each input/output module 21 accommodates two sets of output circuits. In the case of modules,
8-point module where each input/output module #21 accommodates one set of F or two sets of input/output circuits and ■4b
To Yahachi, in the case of a composite module with 116 points, the output terminal of decoder 6 in the CPU module will be 16@. If the input/output module system 61 is a composite module, connect the output terminal of the decoder 64 to either the control terminals 42 or 42B of the Hataketo module, or connect the control terminals 42 or 42B to a short-circuited one. and k, the eight input/output modules 21 can be accessed from the CPU module. Decoder 6
If an open collector circuit is used as the drive circuit for the selection signal in 4, the control terminal 42 short-circuited with the drive circuit
Mu.

When 4!3 is connected, it becomes an OR combination, so the 8-point input/output module 21 is valid for either selection signal. If the input/output module 21 is, for example, a module with all l points, and the number of modules is 8, the input/output 7 joule system 61 will be a system with 128 input/output points. In the case of 8-point and 16-point composite modules, even if the number of modules is s set, the address 4216 & 9 by the selection signal, the CPU module treats the input/output module system 61 as a 128-point system, but the input/output module system 61 of the system If a zero-person output module system 61 with 128 output points or less is configured with 8 sets of 8 input/output modules 21, the system will have 64 input/output points, but the control terminal 4! Mu.

Whether to short-circuit 421 and use one or the other depends on the shape of the three edge contacts and 37B of the input/output module 21 to be accommodated. In this case, as shown in the sig+, a decoder 65 having 8 output terminals is used and 1.2 selection lines are shared. Since the beginning of Todoroki, the number of accesses of the CPU module is 8 (60), and the address space (escape code) of the CPU module can be used effectively. Furthermore, in order to solve this problem, a conventional input/output module system can be used.

As mentioned above, according to the input/output module of the present invention,
By selectively operating multiple input/output circuits, it is possible to increase the amount of data that can be transferred without increasing the storage space, and the arithmetic processing module can access the input/output module regardless of the amount of data transferred. Therefore, it is possible to create a system configuration with medium sturdiness.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of a sequence controller using a conventional input/output module, Fig. 2 is a sectional view showing an example of the input/output module according to the present invention, and Fig. 3 is a schematic perspective view of the sled cost S. 4 is a sectional view of the printed wiring board of the input/output module in FIG. 3, FIGS. 5 and 6 are block diagrams showing examples of the input module and output module according to the present invention, respectively, and FIGS. 1 and 8 are block diagrams thereof. FIG. 3 is a connection diagram between an input/output module and an arithmetic processing module. 11--・Housing, 12-・Input/output module-
13--computation processing (CPU) module, 14--memory module, 15--power supply section, 21--input/output module, 22--
・・Guide rail, 23・−Connector, 24−Path signal line wiring board, 31・・Front plate, 32・・Rating display name plate, 33・・Input indicator light, 34・・・Outside S connection connector, 35 □--Printed wiring board, 36--Electronic component 3-edge contact, 41-External input device, 42-Data bus, 43--Input interface circuit, 44--Gate circuit, 45--
control terminal, 46- selector) path, 47--bus driver circuit, 4B--OR gate circuit, 51-external output device, 52--control terminal, 53--NOR gate circuit, 54-latch circuit, 55-・Driver rotation, 61.-Person output module system, 62.63...Connection bin, 64.65.-Decoder. Patent applicant: Fuji Electric Manufacturing Co., Ltd.Figure 112

Claims (1)

[Claims] The predetermined number of input/output points is taken as one unit, and one or more input/output circuits are implemented for each unit, and input/output circuits that are allowed and implemented in advance according to the number of input/output circuits that can be implemented. A selection signal terminal for supplying a selection signal to a processing module, and selectively operating a pre-dispatch circuit implemented in the processing module according to a selection signal sent from the arithmetic processing module.