The terminal block is usually composed of multiple pieces of terminals installed side by side on the guide rail.The two interfaces of each piece of wiring terminal are short-circuited,and each piece of terminal can be short-circuited in the PLC through the terminal block to connect with peripheral equipment as needed.
The schematic diagram of the connection between PLC and peripheral equipment through the terminal block is shown in the figure.You can also use the code echo method to mark the wiring of each terminal.
接线端子排通常是由多片端子并排安装在导轨上组成的。每片接线端子的两个接口是短接的,根据需要可以将各片端子短接在PLC通过端子排与外围设备连接一起。
PLC通过端子排与外围设备连接的示意图见图所示。也可以采用编码呼应法标注各端子接线。
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