GE 104X905BA603

Description

104X905BA603

DISCONTINUED BY MANUFACTURER

DISPLAY PANEL

W/KEYPAD

FOR DCC/ SDCC BOARD

In order to meet the requirements of various automatic control systems, many functional modules have been developed in recent years, such as high-speed counting module, temperature control module, remote I/O module, communication and human-machine interface module, etc. These intelligent I/O modules with CPU and memory not only extend the functions of PLC, but also are flexible and convenient to use, expanding the application scope of PLC.

Strengthening the ability of PLC network communication is the trend of PLC technology progress. There are two types of PLC networking communication: one is the networking communication between PLCs. Each PLC manufacturer has its own proprietary networking means; The other is the networking communication between PLC and computer. Generally, PLC has special communication module to communicate with computer. In order to strengthen the networking communication capability, PLC manufacturers are also negotiating to formulate common communication standards to form a larger network system. PLC has become an indispensable and important part of the distributed control system (DCS).

Enhance the ability to detect and handle external faults

According to the statistical data, the CPU accounts for 5%, the I/O interface accounts for 15%, the input equipment accounts for 45%, the output equipment accounts for 30% and the line accounts for 5% of the faults of the PLC control system. A total of 20% of the first two faults are internal faults of PLC, which can be detected and processed by the software and hardware of PLC itself; The remaining 80% of faults are external faults of PLC. Therefore, PLC manufacturers are committed to developing and developing special intelligent modules for detecting external faults to further improve the reliability of the system.

Diversified programming languages

With the continuous development of PLC system structure, the programming language of PLC is becoming more and more abundant, and its functions are also improving. In addition to the ladder diagram language used by most PLCs, in order to adapt to various control requirements, there are stepwise programming language for sequence control, flow chart language for process control, and high-level language compatible with computers (BASIC, C language, etc.). The coexistence, complementarity and development of multiple programming languages is a trend of PLC progress.