chinthana Posted February 26, 2007 Report Posted February 26, 2007 Hi I have a problem of communication on two PLCs. Master PLC is Modicon TSX 57. Slave PlC is TWIDO. There connected through RS232 connections. The modicon unit has PCMCA card, which is T SCP111SX. Port settings, connection and Hardware are ok. I have communicated with the existing program. But now it is not communicates Thanks chinthana.
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