Error Code 7011
Modbus RTU (MBRead) - error code 7011 - what does it means?
Tx/Rx are flashing, MBConnect gives Valid State.
Try to read:
Fore customer's register 30501 = 500 dec
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I guess you refer to MBRead Block in AC800M Controller - refer the CBM Help for "Status Codes for MODBUS"...
-7011 cErrMBCRCError - Data lost in transaction, error in received CRC
This probably means that your Slave does not return the correct Checksum Value required by AC800M or the Data is not received correctly.