Modbus; Communication Settings - Emerson Smart Wireless Gateway Reference Manual

Section 5: Host Integration
April 2013
Figure 5-4. Security Protocols page (internal firewall)
5.4

Modbus

The Gateway supports both Modbus RTU over the RS-485 serial port and Modbus TCP over
Ethernet. It functions as a sub device on the Modbus network and must be polled by a Modbus
master or client (host system).
5.4.1

Communication settings

It is import that the Modbus communication settings in the Gateway match the setting in the
Modbus master or client. Please refer to host system documentation for more information on
how to configure these settings. The Modbus communication settings can be found by
navigating to Setup>Modbus>Communications.
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Reference Manual
00809-0200-4420, Rev GA
Host Integration