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NBOMB

CJ1M Serial Communications Buffer

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Hey everyone, I have a CJ1M PLC with a CJ1W-SCU21-V1 serial card. It is unit 6 and I am using port 1. I have bit 1659.06 ((1500 + 25 * Unit #) +9, bit 6) as "characters in buffer" but it never comes on (data is being received through the port successfully). It is on No-Protocol mode. Does anyone have any ideas as to how I can detect data in the buffer?

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You either set an end code in the setup of the port, or you specify a number of bytes received.   If the end code is received or the number of bytes set is received, then this bit turns on.  

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