s7300

2015-07-09View Original

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The DO card I’m using on an S7-300 occasionally fails to produce any output. What could be the possible reasons? It’s used with a compressor

Reply #22015-07-09

Could you describe it in detail? The specific configuration, control logic, and so on

Reply #32015-07-10

It’s estimated that 99% of the problem is caused by your program; please check carefully, especially to see if this DO coil has appeared in other places as well

Reply #42015-07-10

If it stops, you can directly force this point and observe. If there are no issues, then there might be an error in your program.

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