31
Reference Manual
00809-0100-4804, Rev CB
Configuration
November 2016
Configuration
Note
If using an ERS System with the Rosemount 333 HART Tri-Loop, the burst option should be set to
“Dyn vars/current.”
Burst variable slot definition
If either Device vars w/status or Device Variables is selected as the Burst Option, you will need to
configure which variables are communicated in Burst Mode. This is accomplished by assigning a variable
to a Burst Slot. ERS System has four available Burst Slots for burst communication.
3.5.3 Multidrop communication
The HART protocol allows several transmitters to communicate digitally on a single transmission line
when wired in a Multidrop network. If using an ERS System in a multidrop network, the connection to
the network is made through the primary sensor as shown in Figure 3-2.
Note
Figure 3-2 shows a typical multidrop network. This figure is not intended as an installation diagram.
Communication between the host and the transmitters takes place digitally, and the analog output on
each transmitter is deactivated.
Note
A transmitter in multidrop mode with “Loop Current Mode” disabled has the analog output fixed at 4
mA.
Figure 3-2. Typical Multidrop Network
A. HART modem
B. Power supply
C. ERS System
Fast Keys
2, 2, 5, 2
To Next Page
Loading...
Need help?
General
