Emerson Micro Motion 1600 - Configure HART trigger mode

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
ProLink III Field communicator
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 HART trigger mode
Display
Menu → Configuration → Inputs/Outputs → Channel A → HART Settings → Burst Message x →
Trigger Mode
ProLink III Device Tools → Configuration → Communications → Communications (HART) → Trigger Mode
Field communicator Device Settings → Communication → HART → Burst Configuration → View Message x →
Configure Update Rate
Trigger mode uses the burst message mechanism to indicate that a process variable has changed. When
trigger mode is implemented, the bursting interval (HART update rate) changes if Primary Variable or
Burst Variable 0 moves above or below the user-specified trigger level. You can set up a different trigger
on each burst message.
Prerequisites
Before you can configure trigger mode, the corresponding HART burst message must be enabled.
Procedure
1. Select the burst message for which you will set up trigger mode.
2. Set Trigger Mode to the type of trigger you want to use.
Option
Description
Continuous The burst message is sent at Default Update Rate. The burst interval is not affected by
changes in process variables.
Configure digital communications Configuration and Use Manual
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