PLC contact string, parallel command usage examples and usage precautions - Database & Sql Blog Articles

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The probe capacitor polarity needle has a head diameter of 5.8. The total length of the 7-pin and 12-pin needles is 5.

(1) Usage example

(2) Precautions for use

1) AND normally open contact series connection command, ANI normally closed contact series connection command.

The OR normally open contact is connected in parallel with the command, and the ORI normally closed contact is connected in parallel.

The four instructions must have the name of the operated component and the component number.

2) In the programming, considering the limited function of the graphic programmer and the printer, the number of AND, ANI usage is not more than 9 times, and the number of parallel connection of OR and ORI is not more than 24 times.

3) The above four instructions are only used for the connection of a single contact to the front circuit, and are not applicable to the connection of the circuit block to the previous circuit.