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Quick Start Guide
4.3.6
Connecting to a Rosemount 2460 System Hub
There are several ways to connect a Rosemount 2460 System Hub to a host
system:
•
from a Host Port using TRL2 bus
•
from a Host Port using RS232 or RS485
•
via Ethernet Eth1 port
The TRL2 Bus requires a twisted and shielded pair cable with a cross-
sectional area of 0.50 to 2.5 mm
Bus Modem (FBM) is used to connect the system hub to TankMaster or other
host computer.
A service PC can be connected to the Ethernet Eth3 port for configuration
and maintenance.
For RS232 communication, wiring cross-sectional area must be at least 0.25
2
mm
(24 AWG or similar). The typical maximum length of the RS232
connection is 30 m at baud rate 4800.
Table 4-1: Data Rate and Maximum Distances for RS232 Communication
Baud rate (bps)
2400
4800
9600
19200
Communication ports for hosts and field devices
The Rosemount 2460 System Hub has eight ports for communication
interface boards. It is equipped with interface boards for field device
communication and host communication. The specific configuration is
specified in the ordering information. Communication boards can easily be
exchanged if needed.
Port 8 is used for TankMaster communication. Port 7 is used for host or
TankMaster communication as specified in the ordering information.
Port 1 to Port 4 are used for field device communication.
Ports 5 and 6 can be used for host or field device communication as specified
in the ordering information. This allows you to vary the number of field and
host ports depending on the specific requirements.
Table 4-2
20
shows various configuration options for a system hub.
2
(20 to 14 AWG). A Rosemount 2180 Field
Distance (m)
60
30
15
7.6
September 2020
Rosemount 2460 Tank Hub
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