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Siemens - 6ES72411AH320XB0 - PLC Expansion Module, Communication, RS232, CM 1241, SIMATIC S7-1200 Series - RS
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Siemens S7-1200 RS232 serial communication using the CM1241 module with the SEND_PTP Function Block - YouTube
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Siemens - 6ES72411AH320XB0 - PLC Expansion Module, Communication, RS232, CM 1241, SIMATIC S7-1200 Series - RS
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