Communication - Emerson Rosemount 2460 Reference Manual

Overview
March 2017
2.2

Communication

The Rosemount Tank Gauging system supports various communication interfaces between field devices
and a TankMaster PC or other host computer as illustrated in
The Rosemount 2460 System Hub collects measurement data from field devices and transmits the data
to a host system. It also handles communication from a host to the field devices.
The Rosemount 2460 supports a number of communication interface standards. For host
communication, the TRL2, RS485, and RS232 are supported. TRL2 and RS485 are supported for field
device communication also, as well as other standards such as Enraf and Digital Current Loop (Whessoe).
The Rosemount 2410 Tank Hub has a Primary bus and a Secondary bus that can be used for TRL2 Modbus
(standard) or RS485 Modbus communication
protocols as well, such as Enraf, Varec etc.
Figure 2-2. Typical configuration of a Rosemount 2460 System Hub connected to a Rosemount
Field devices
Field devices
1. See "Cabling for the TRL2/RS485 bus" on page 29
8
2410 Tank Hub and a PC/Host
Rosemount
TankMaster
USB
RS232
Modem
RS232
RS485
Ethernet
TRL2, RS485
Rosemount 2410 Tank Hub
Tankbus
for information on cable requirements.
Figure
(1)
. The Secondary bus supports other communication
DCS/Host
(TRL2, RS485, RS232)
Rosemount 2460 System Hub
TRL2, RS485
Primary bus: TRL2, RS485
Reference Manual
00809-0100-2460, Rev DB
2-2.
Enraf field devices
Whessoe field devices
Secondary bus:
Enraf
HART 4-20 mA
Analog output/input
Overview