Comtrol Modbus TCP User Guide User Manual
Page 93
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DeviceMaster UP Modbus/TCP User Guide: 2000447 Rev. I
Appendix A. Programming the PLC via Concept- 93
Modbus/TCP Slot/Index and DeviceMaster UP IP Address Definition
A.2.2.6. Modbus/TCP Slot/Index and DeviceMaster UP IP Address Definition
The following screen displays the AddrFld used in all Concept Modbus/TCP messages.
Where:
The first entry (511 or 1FF hex) denotes the following:
Byte 1
•
LS byte must be 255 (FF hex) to indicate to the DeviceMaster UP that this is raw/
ASCII serial data.
•
MS byte: Momentum PLC = 1
•
Quantum PLC = Slot number of Ethernet card
•
Compact PLC = Slot number of Ethernet card
Byte 2
MS byte of IP Address.
Byte 3
Second byte of IP Address.
Byte 4
Third byte of IP Address.
Byte 5
LS byte of IP Address.
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