digital input

Why Emergency Stop in PLC Programming Should Be Wired Normally Open

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Why Emergency Stop in PLC Programming Should Be Wired Normally Open

In PLC programming, the physical contact of the stop button is generally connected as normally closed, while in the program, it is written as normally open. This type of stop button only serves as a signal in this equipment.Why is the emergency stop in PLC programming opposite to that of a regular emergency stop button? … Read more

How to Wire Mitsubishi FX Series PLC and Download Programs via RS-232

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How to Wire Mitsubishi FX Series PLC and Download Programs via RS-232

Today, I will briefly introduce how to wire the Mitsubishi FX series PLC and how to download programs via RS-232. This simple explanation will help you quickly communicate with the PLC and run your own written programs. How to Communicate via RS-232 1. First, install the driver for the RS232 data cable: (1) Plug in … Read more