Modbus tcp, Tcp/ip port – Rockwell Automation 1420 PowerMonitor 500 User Manual
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Rockwell Automation Publication 1420-UM001D-EN-P - September 2013
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PowerMonitor 500 EtherNet/IP Device Profile
Appendix C
Modbus TCP
The communication module supports Modbus TCP. The protocol is the same as
the PowerMonitor 500 unit with RS485 (Modbus RTU). Refer to
for
protocol details. In this product, only one Modbus TCP connection (1 socket) is
allowed.
The EtherNet/IP and Modbus TCP do not run concurrently. If Modbus TCP
communication occurs, EtherNet/IP communication stops temporarily but
recovers in a minute or two.
ACD
If an address conflict is detected from the communication module, then the base
module displays ‘ACD Found’. In that case, it is necessary to check the network
configuration, resolve the problem, and then cycle control power to the power
monitor to re-establish communication.
TCP/IP Port
Default EtherNet/IP ports include the following:
• UDP (implicit message): 2222 (0x08AE)
• TCP (explicit message): 44818 (0xAF12)
You can reassign the default Modbus TCP port:502 (0x01F6).