9.1.3 Configure burst communications
Burst mode
is a mode of communication during which the transmitter regularly broadcasts HART digital
information to the network via the primary mA output.
Restriction
Burst communications, including trigger mode and event notification, is not available on HART/RS-485. These
features are supported only on HART/Bell 202.
Configure HART burst messages
Display
Menu
>
Configuration
>
Inputs/Outputs
>
Channel A
>
HART Settings
>
Burst Message x
ProLink III
Device Tools
>
Configuration
>
Communications
>
Communications (HART)
>
Burst Mode
Field Communicator
Configure
>
Manual Setup
>
HART
>
Burst Mode
Burst messages contain information on process variables or transmitter status. You can configure up to three
burst messages. Each message can contain different information. Burst messages also provide the
mechanism for trigger mode and event notification.
Procedure
1. Navigate to the burst message you want to configure.
2. Enable the burst message.
3. Set
Burst Option
to the desired content.
Table 9-1: Options for burst message contents
HART
command
Label
Description
PLII
FC
1
Source (Primary
Variable)
Primary Variable
The transmitter sends the primary variable (PV) in
the configured measurement units in each burst
message (e.g., 14.0 g/sec, 13.5 g/sec, 12.0 g/sec).
2
Primary Variable
(Percent Range/Current)
Pct Range/Current
The transmitter sends the PV’s actual mA level and
the PV’s percent of range in each burst message
(e.g., 11.0 mA 25%).
3
Process Variables/
Current
Process Vars/Current
The transmitter sends the PV’s actual milliamp
reading and the PV, SV, TV, and QV values in
measurement units in each burst message (e.g.,
11.8 mA, 50 g/sec, 23 °C, 50 g/sec, 0.0023 g/cm
3
).
9
Read Device Variables
with Status
Device Variables with
Status
The transmitter sends up to eight user-specified
process variables in each burst message.
33
Transmitter Variables
Field Device Vars
The transmitter sends four user-specified process
variables in each burst message.
48
Read Additional
Transmitter Status
Read Additional Device
Status
The transmitter sends expanded device status
information in each burst message.
4. Depending on your choice, select the four or eight user-specified variables for the burst message, or
set the HART variables as desired.
Configure digital communications
Configuration and Use Manual
March 2019
MMI-20025166
168
Micro Motion Model 5700 Transmitters with Configurable Outputs