7/31/2014 1:43 PM | |
Joined: 12/22/2006 Last visit: 1/25/2022 Posts: 1742 Rating:
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Hello, 8383 corresponds to an error code replied by the SOCOMEX (code 2 = invalid address). The value stored at register 50768 is for isntance a hour meter, but it is 2 words long (in fact it covers two registers, the next readable being 50770, confirming that the value 50768 covers two registers). This means that you must read an even number of registers (2, 4, 6, 8, ...). If this does not help, it will be necessary to checkwhy the PLC is sending a wrong request (what is the PLC exactly sending out as requested register address.) A trace with wireshark (freeware program to be installed on a sniffing PC, see www.wireshark.org)would help. Or any other indirect way to catch the PLC request (with a free Modbus server on the PC?). |
Best regards |
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