Emerson Smart Wireless Gateway Reference Manual page 42

Section 5: Host Integration
April 2013
Fiber optic (optional)
A Fiber Optic connection supports Modbus TCP, OPC, AMS Wireless Configurator, and HART TCP
protocols. Using this connection type, the Gateway is wired to a fiber optic switch (see
Figure
Note
A fiber optic connection requires a third party copper Ethernet to fiber optic Ethernet converter.
Figure 5-2. Fiber Optic LAN Architecture
RS-485 (serial)
An RS-485 connection supports Modbus RTU protocol. Using this connection type, the Gateway
is wired to an RS-485 bus which typically leads to a serial I/O card or Modbus I/O card (see
Figure
34
5-2).
5-3). Up to 31 Gateways can be connected to a single I/O card in this manner.
Reference Manual
00809-0200-4420, Rev GA
Host Integration