Regarding the channel problem of S7200?
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How can you tell at a glance how many channels an S7200 module has? Some can tell, and some don't. How can you tell what kind of module it is and how many channels it has? Thanks?
Most S7-200 modules are identified by model number, I/O type and quantity； For modules without labels, although you can make a rough judgment based on the number of terminals and switch status lights, I think it is best to refer to the "S7-200 Selection Manual" for accurate judgment.
Just download the selection manual and take a look