Modbus/TCP CI867 Communication error
After upgrade to v6.0.3 (FW861 220.127.116.11, FWCI867 6.0.0104.0) we lost communication with ModbusTCP gateway.
MBTCPConnect block is valis but shows Error -7001 roughly every ~20s.
MBTCPRead and Write blocks always give Error on Req.
I've done packet capture and reviewed it in Wireshark and can see that CI867 send a Modbus/TCP query packet to the gateway and gateway respons with value in given register for all nodes. Writes to slaves are also processed by gateway and updated in slaves.
All TCP packets from CI867 has "Ethernet Frame Check Sequence Incorrect"
"Default diagnostic poll time for serial/TCP slaves" is set to 0 and this did in previus version disable diagnostic polling (this is also said in ControlBuilder documentation in current version).
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