Intelligent communication module of pas100 control system and its processing method

Abstract

The invention discloses a PAS100 control system intelligent communication module and a processing method thereof. The PAS100 control system intelligent communication module comprises an MCU, wherein the first input / output port of the MCU is in electric connection with a first bus communication interface through a first bus driving circuit, and the second input / output port of the MCU is in electric connection with a second bus communication interface through a second bus driving circuit. The intelligent communication module is used for communicating with the controller of a control layer and each IO module of an input / output module through a bus and Modbus communication protocol, receiving a read-write IO module instruction sent by the controller, meanwhile analyzing an output control instruction of the controller, returning the data in each IO module buffer zone input area to the controller, sending an output instruction to each output module, sending a read instruction to each input module and storing the read data in each IO module data buffer input area. The intelligent communication module increases the communication rate between the controller and each IO module, has high compatibility, and is safe and stable to operate.

Description

technical field [0001] The invention belongs to a control system, and in particular relates to an intelligent communication module of a PAS100 control system and a processing method thereof. Background technique [0002] PAS100 control system generally includes input and output layer, control layer and monitoring layer. The input and output layer is the bottom layer of the distributed control system, which is directly connected with various field instruments, sensors, actuators and other equipment, and is responsible for on-site monitoring signal collection and system monitoring. Control signal output. The main component of the input and output layer is the input and output module (referred to as the IO module). The control layer also plays a connecting role in the system, not only to realize the collection and processing of system data, but also to shoulder the important task of controlling logic operation and control result output and realizing the data interaction functi...

AI Technical Summary

Problems solved by technology

However, the high-speed communication technology of the new technology is relatively difficult and the cost is relatively high. At the same time, the introduction of new communication technology will inevitably involve changes in the overall system architecture design, which not only increases the difficulty of system design, but also increases the cost of the system. Achieve compatibility with legacy systems

If the number of channels of each IO module is increased, the number of IO modules in the system with the same capacity can be appropriately reduced, and the communication time between the controller and the IO module can be reduced to a certain extent. Difficult to achieve, or even impossible to achieve

In addition, the design of too many channels of IO modules does not conform to the design idea of ​​the distributed control system, and the number of channels added to each IO module is very limited, so the effect of improving the communication efficiency between the controller and IO modules by this method is also limited. of

Images