JPS58205349A - Sequential connection type communication controller - Google Patents

Abstract

PURPOSE:To set optionally the number of computers of an opposite communication terminal, by connecting plural communication controllers in cascade in the communication among computers using plural communication controllers. CONSTITUTION:A microprocessor (MPU) checks sequentially whether or not a communication requests exists from a line, and when the communication request exists, data are received from lines 28-31 and stored in a memory 21 via serial/ parallel converters 22-27. The MPU transfers the data to the connecting objective at a data address to be transferred. When the address to be transferred is not an automatic controller, the data are transferred to the other controllers on lines 32 and 33 according to the address.

Description

DETAILED DESCRIPTION OF THE INVENTION Regarding this Q91jd microcomputer, the device that performs all data conversion between computers,
From a small system to a communication control device that is suitable for a large system 1 that is configured in a parallel manner, PA' is used.

"b" is also a data exchange between several computers.
Although the Tsushin City 1J Misaki device that comes with it is easy to use, the size, length, and stem of a small system may differ in the configuration method and components, so it is desirable to expand the system using the same method. As a communication control device between Pew J1, it has rarely been used as a communication control device, and has the disadvantage that it is difficult to expand.

The purpose of the present invention is to provide a communication control GL device that can be used in small and large systems by simply using the same method and preparing the required number of devices.

A small computer τ such as a microcomputer
In order to use a large number of devices to link objectives, it becomes necessary to exchange data in the dark. In my opinion, many of the calculations on the Microninputer are 6C, which is the same as the original 6C. The invention advances this idea and uses the same device to create a bias system.

The following description will be made using LA Invention Example 15f and Figures 1 to 5r.

The communication control device l according to the invention has four connections (for example,
Microcomputer) 4 fittings that can be connected to τ! ! p
C parts 2 to 5 are separated, and furthermore, there is a soft fold opening 6 and a downstream connection lower part t%. 1st - 1st 3 cars 1fIfb
iJ groan A direct up, downstream connection line 12.13 r connected 7L, connection target in collaboration 1281 n, data exchange between 12 units n shows the gradation table 2. FIG. 2 shows one of the configurations of the hexadecimal control diagonal. #CC serial lines 28 to 31 are connected to the microcomputer, and are connected to the Micro Flow Sera V20 bus via parallel conversion connections h22 to 25. Soft soin 32.33μmf: 1L-tr
The real bus is connected to the bus of the microprocessor 20 via upper and downstream switching units 26 and 27. The data from the two housings and the valley fittings are then stored in the memory 21 and then transmitted to the connected objects. FIG. 3 shows an example of transmitted data in the case of serial data transmission, which is often used. It is composed of parts separated by byte units of the opening frame 41 closing frame 47. What is important here is the destination address 42, which can be faked as shown in FIG. In Fig. 4, the destination address of 8 people is 42 (purple), and is further divided into bits, and the communication control device number is partially 50 (in the example, it is 0 in binary).
0010 (one 195 is shown (41+)), and a connection target number part 51 (in the example, 01 is shown in binary, that is, one digit).

Next, the operation of this communication control device will be explained. The microprocessor 20 inside the communication system @l device 1 receives the communication from the connection part as shown in the flow diagram of Figure 51145. KL Uneji checks to see if there is a request, and it is 1.
At t, it receives and receives data from the connection target, sends the cocoon stand pitator to the connection target n indicated in the destination address 42,
Complete communication. In this case, the microprocessor 20 checks the destination address 42i, first determines whether the communication control device number 1150 is itself, adds ρ·r, and then adds its own fi 1! ToJ (ill device number) is connected to itself. If the communication control device number is smaller than itself, the data is sent to the upstream through the upstream connection. Send it to the S employee.Similarly, if the communication control device number is yours =
If 9 is also large, the data is sent to the downstream communication control device 1. With the simple principle described above, the same communication 1ffilJ
#By sequentially *vcing the required number of devices, it is possible to construct a communication control system wt.

The present invention has the advantage that the computer, the shaft, the space required, and the ease of use between the micro holder and the
As a control device, it has the following effects.

(1) By sequentially connecting the required number of identical communication control devices, a communication control system of any size can be configured.

(2) For each connection target, just think about the destination address 42, and check whether it is the other party in the communication control 1 device to which you are connected.
Alternatively, communication can be performed using the same method regardless of whether it is connected to another communication control device.

(3) Communication system@l devices within the same system become part of the
Productivity and measuring efficiency are improved.

[Brief explanation of drawings]

Fig. 1 shows an example of the present invention, Fig. 2 shows an example of the configuration of its basic part, Fig. 31 shows an example of the jLΦ theme used in retrograde 1g, and Fig. 4 shows a part of the review of the third part. Functions tWi1 in the embodiment shown in FIG. 5r. A flow diagram is provided to clarify the situation. l...Communication system a iron direct, 2-5...connection part, 6...
Local accent part, 7...lower flE, connection part, 8-11...
・Connection target, 12...Top [Makakura line, 13...Lower accent line, 20...Microprocessor, 21.
・・Memory, 22-25... Real parallel conversion &
- Itobe, 26...Hiromine continuation part in serial parallel,
27...7 Real No Ku Rare Hon' Le Friendship Ryu Soft Club, 28-31... Connection line, 3
2...Upstream withdrawal line, 33...Downstream connection line,
41... Opening flag, 42... Source address, 43... Command, 44... Sending side address, 45... t*@ section, 46... C) LC check data, 47...・・Releasing l day 3rd eye 2 5θ, fl 5th eye

Claims (1)

[Claims] 1. Communication control in a communication control device that allows data exchange between multiple computers! When exchanging data between computers with a number of connectable computers, connect the upstream connection port or downstream connection port of the communication system device to the communication system device with the same configuration. Downstream connection: 1 Communication control device connected to the upstream connection port to enable data exchange between the required number of computers in sequence.