ProSoft Technology 5201-MNET-ASCII - Manual (Page 15)

MNET ♦ ProLinx Gateway Functional Overview
Modbus TCP/IP Interface Module Driver Manual
ProSoft Technology, Inc. Page 15 of 78
September 1, 2010
1.4.3 Modbus Message Routing: Port 2001
When Modbus messages are sent to the module over the TCP/IP connection to
port 2001, the messages are sent (routed in the module) directly out the serial
communication port (Port 0, if it is configured as a Modbus Master. The
commands (whether a read or a write command) are immediately routed to the
slave devices on the serial port. Response messages from the slave devices are
routed to the TCP/IP network to be received by the originating host.