
ET-7X00/PET-7X00 User Manual, version 1.1.2 Page: 89
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4.1.
Modbus TCP/IP Interface
The Modbus/TCP interface is attached to the TCP/IP stack that is implemented within the
ET-7X00/PET-7X00 module, and will listen to all communications that come in on
Modbus/TCP registered Port 502.
The Modbus/TCP client uses the standard TCP method for communicating with the
ET-7X00/PET-7X00 module. UP to 12 connections are possible at one time. If there are 12
active connections, any attempt at any more connections is ignored.