JPS63233634A - Circuit structure for bidirectional signal between universal sequencers - Google Patents

Abstract

PURPOSE:To smoothly and rapidly respond to the increase/decrease of signal lines, by forming a data request circuit and a data in-delivery circuit between the inputs and outputs of universal sequencers, and coupling the inputs and outputs with a minimum number of data lines. CONSTITUTION:The data request circuits 5 and 6 are formed between an output part A2 and an input part B5, and between an output part B1 and an input part A4. Also, the data in-delivery circuits 7 and 8 are formed between an output part B2 and an input part A5, and between an output part A1 and an input part B4. Meanwhile, a data line circuit 9 is provided between an output part A3 and an input part B6, and bypass lines 10 and 11 branched from the circuit 9 and linked to an output part B3 and an input part A6 are formed. Also, to universal sequencers A and B, a plus line 12 and a minus line 13 are linked respectively. Thus, since only five signal lines are formed in the sequencers A and B, it is possible to reduce the number of signal cables between the universal sequencers remarkably.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention provides a bidirectional circuit structure between general-purpose sequencers that connects the general-purpose sequencers with at least five signal lines to transmit and receive data signals. Regarding.

rPrior art] When transmitting and receiving a large number of signals between two general-purpose sequencers that are separated from each other, signal lines corresponding to the number of signals are required9.For example, when 100 transmitting and receiving signals are required, 100 signal lines are required.

For this reason, there is a problem that the single circuit structure becomes complicated and expensive.

[Problems to be Solved by the Invention] Transmission and reception signals each need to be sent at a speed of 10 seconds, for example, but may also be sent at a speed of about 1 sec. Therefore, for example, when transmitting and receiving 100 signals, only a single data line is used to send and receive 100 signals.
The signal may be transmitted sequentially every 5 ec.

The present invention was created based on the above viewpoints, and is a general-purpose sequencer that connects general-purpose sequencers with as few circuits as possible, eliminates signal cables, and can smoothly and quickly respond to increases and decreases in signal lines. The purpose of the present invention is to provide a bidirectional signal circuit structure between.

[Means for solving the problem] For this purpose, the present invention forms a data request circuit and a data sending circuit between input and output between general-purpose sequencers, and
A bidirectional signal circuit between general-purpose sequencers in which the input and output are connected by as few data lines as possible, and a large number of data signals are transmitted and received via the data lines based on a data request signal and a data sending signal. It forms the structure 41j.

[Function] When a data request signal is sent from one general-purpose sequencer to another general-purpose sequencer, the other general-purpose sequencer causes a data sending signal to be sent via the data sending circuit, and a data signal is sent via the data line. will be sent sequentially. Similarly, a data sending signal and a data signal can be sent from one general-purpose sequencer in response to a data request signal from the other general-purpose sequencer.

[Example] Figure 1 shows the signal circuit structure between two general-purpose sequencers A and B. There is an output section 1 in the general-purpose sequencers A and B.
．． 2 and input sections 3 and 4 are formed, respectively. For convenience of explanation, the output section 1 of A general-purpose sequencer is A, , A2.
, A3, and its input section 3 is A4 + A5
*The output part of the B general-purpose sequencer is Bl.

B2. B3 personnel department B4, BS + B6. A data request circuit 5.6 is formed between the output section A2, the input section 35 and the output section B, and the input section A4. Furthermore, a data sending circuit 7.8 is formed between the output section B2 and the input section A5 and between the output section A1 and the input section 84. On the other hand, a data line circuit 9 is provided between the output section A3 and the input section 86, and a bypass line 10.11 is formed branching from the data line circuit 9 and connected to the output section B3 and the input section A6. Further, in the A and B general-purpose sequencers, there are six or more signal lines connected to the plus line 12 and the minus line 13, respectively, and only five signal lines are formed in the A and B general-purpose sequencers.

Next, the operation of this embodiment will be explained in detail with reference to FIG. 142.

When a data request signal (data request (1)) is sent from the A general-purpose sequencer output section A2 to the input section B5 of the B general-purpose sequencer via the data request circuit 5 to the general-purpose sequencer side, the general-purpose sequencer side outputs the output section B2. From input section A5
A data sending signal (data sending (2)) is sent to the A general-purpose sequencer side via the data sending circuit 7 toward the data sending circuit 7, and at the same time the data sending signal (data sending (2)) is sent from the output section B3 to the bypass line 10. A data signal (data line (3)) is sent to input section A6 via data line circuit 9 and bypass line 11.

That is, the data signal flows through a single data line 9 as shown by arrows C, D, E, F, and G and is sent to the input section A6. Specifically, when a data signal is sent from the output section B3, a circuit (not shown) is formed on the input section B6 side and the output section A3 to cut off the signal, and the data signal enters the data line circuit 9 from the bypass line 10. The signal is configured so that it does not enter the input section B6 side and the output section A3 side, and as shown in arrow E,
Next, a data request signal (data request (4)) is issued from the B general-purpose sequencer side to the A general-purpose sequencer side via the data request circuit 6 from the output section B1 to the input section A4. As a result, from the A general-purpose sequencer side, a data sending signal (data sending signal) is sent from the output section A to the input section B4 via the data sending circuit 8.
5)) is sent, and at the same time, a data signal (data line (6)) is sent as shown by arrow H via the data line circuit 9 from the output section A3 to the input section B6. The data signal reciprocating through the single data line circuit 9 is composed of multiple data signals.

These data signals are sent sequentially at intervals of, for example, 10 mgee. Therefore, when sending 100 data signals, a transmission time of 10.times.5 ec.times.100=1 sec. is required.

As described above, according to this embodiment, a large number of data signals can be smoothly transmitted and received using only five signal cables, and the single circuit structure can be made more convenient and can be formed at low cost. can be raised. Further, in this embodiment, the circuit structure is of a current output (current drawing type) type, but a current sink (current sending type) may be used.

In FIG. 0 showing another embodiment of the present invention in FIG.
The same reference numerals as in the drawings indicate the same thing or the same function. In this embodiment, there are four data lines (a) and (b).

(c), Cd")), data line circuit 14, respectively
．． Form 17.20. Namely, the data line! 4
is the data line circuit 1 between the output section A4 and the input section 810.
7 is a data line circuit 20 between the output part A5 and the input part B.
are formed within the output section A6 and the input section B10. Also, in the data line circuit 14.17.18, the bypass line 18
to the input section All+ through the bypass line 18 branched from the data line circuit 17, to the output section B5 through the bypass line 18 branched from the same circuit, and to the input section All through the bypass line 21 branched from the data line circuit 20 to the output section B6 through the bypass line 19 branched from the same circuit. , and are connected to the input section AI2 through bypass lines 22 branched from the same circuit.

In the above configuration, A as in the above embodiment.

B By the data request signal from the general-purpose sequencer.

Data transmission signals are sent respectively, and the signals are transmitted and received via the data line circuits 9, 14, 17, and 20.In this embodiment, four data line circuits are formed, so in the case of one data line circuit, It is possible to send and receive data signals four times faster.

The number of data line circuits 9 etc. should be determined by taking into consideration the number of data signals to be processed and the transmission/reception speed.
Furthermore, even if the number of data signals increases, if the existing data line circuit has sufficient capacity, there is no need to install a data line circuit each time, and it is possible to respond extremely quickly.

[Effects of the Invention] As is clear from the above description, according to the present invention, the number of signal cables between general-purpose sequencers can be greatly reduced, and the effect of smoothly and quickly responding to increases and decreases in the number of signal lines has been achieved. It will be done.

[Brief explanation of drawings]

FIG. 1 is a circuit diagram of an embodiment of the present invention, and FIG. 2 is a diagram for explaining the operation of the embodiment of FIG. FIG. 3 is a circuit diagram of another embodiment of the present invention. 1.2...Output section, 3.4--.Input section. 5.6... Data request circuit, 7.8-... Data sending circuit, 9, 14.17.20-... Data line circuit, 10, 11.15, 18.18', 19, 21. 22
-...Bypass line! 2-・φ positive wire, 13・・red negative wire.

Claims (1)

[Claims] 1. A data request circuit and a data sending circuit are connected between the input and output of the general-purpose sequencers, and a bidirectional data line circuit is connected between the general-purpose sequencers, and one of the general-purpose sequencers A data request signal from the sequencer side inputs a data signal from the other general-purpose sequencer side through the data sending signal and data line circuit, and conversely, a data request signal from the other general-purpose sequencer side inputs a data signal to one general-purpose sequencer. , a bidirectional signal circuit structure between general-purpose sequencers configured to input a data sending signal from one general-purpose sequencer and a data signal to the other general-purpose sequencer via the same data line circuit. 2. Four signal lines consisting of a data request circuit and a data sending circuit are formed between the two general-purpose sequencers A and B, and at least one signal line for a data line circuit is formed between both sequencers. A bidirectional signal circuit structure between general-purpose sequencers according to claim 1. 3. The bidirectional signal circuit structure between general-purpose sequencers according to claim 1, wherein the data line circuit is of either a current sink or current output type.