Figure 5-2: Fiber Optic LAN Architecture
A
B
C
D
F
G
H
E
A. Engineering station
B. Primary control network
C. Secondary control network
D. Controller and I/O
E. Fiber optic switch
F. Fiber optic
G. Copper to fiber converter
H. Gateway
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
). Up to 31 Gateways can be connected to a single I/O card in this
manner.
Reference Manual
Operation and Maintenance
00809-0200-4420
September 2020
Emerson.com/Rosemount
45
Summary of Contents for Smart Wireless Gateway 1420
Page 1: ...Reference Manual 00809 0200 4420 Rev HE September 2020 Emerson Wireless 1420 Gateway ...
Page 34: ...Installation Reference Manual September 2020 00809 0200 4420 34 Emerson com Rosemount ...
Page 42: ...Commissioning Reference Manual September 2020 00809 0200 4420 42 Emerson com Rosemount ...
Page 62: ...Troubleshooting Reference Manual September 2020 00809 0200 4420 62 Emerson com Rosemount ...
Page 84: ...DeltaV Ready Reference Manual September 2020 00809 0200 4420 84 Emerson com Rosemount ...
Page 95: ...Reference Manual 00809 0200 4420 September 2020 Emerson com Rosemount 95 ...