Establishing Multidrop Communication - Emerson Rosemount 2088 Reference Manual

Reference Manual
00809-0100-4108, Rev BA
Configuring burst mode using a field communicator
From the HOME screen, enter the Fast Key sequence
Device Dashboard Fast Keys
Configuring burst mode using AMS Device Manager
1. Right click on the device and select Configure.
2. Select the HART tab.
3. Enter the configuration in Burst Mode Configuration fields.
2.11

Establishing multidrop communication

Multidropping transmitters refers to the connection of several transmitters to a single
communications transmission line. Communication between the host and the transmitters
takes place digitally with the analog output of the transmitters deactivated.
Multidrop installation requires consideration of the update rate necessary from each
transmitter, the combination of transmitter models, and the length of the transmission line.
Communication with transmitters can be accomplished with HART modems and a host
implementing HART protocol. Each transmitter is identified by a unique address and responds
to the commands defined in the HART protocol. Field Communicators and AMS Device Manager
can test, configure, and format a multidropped transmitter the same way as a transmitter in a
standard point-to-point installation.
Figure 2-15
diagram.
Figure 2-15. Typical multidrop network (4-20 mA only)
A. HART Modem
B. Power Supply
Configuration
shows a typical multidrop network. This figure is not intended as an installation
A
B
2, 2, 5, 3
Section 2: Configuration
March 2014
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