I am using rs-232 in s7-1200 PLC is this possible to use it for two slave I'd at a time

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Split from Siemens S7-1200 and RS232 communication....

UMENCHO

Hello,

Look at How can you avoid overwriting the flags that are allocated for system and clock memory bits in the user program? I think this FAQ will clarify situation.

Best regards,
Hristo Mihalev

 how to use rs-232 for two slave please help me

I have only one module