Configure Modbus Communications - Emerson Micro Motion SGM Configuration And Use Manual

Integrate the meter with the control system
March 2021
Restriction
This feature is available only with a HART 7 host.
Procedure
1. Enable event notification.
2. Select all desired alerts.
If one or more of the selected alerts occurs, each active burst message will broadcast HART Command
119 until the alert is acknowledged by a HART master.
3. Set Trigger Interval as desired.
Trigger Interval controls the delay before HART Command 119 is broadcast.
• Default: 0 seconds
• Range: 0.5 to 3600 seconds
Trigger Interval begins when the transmitter detects the alert condition. When Trigger Interval
expires:
• If the alert is still active, HART Command 119 is broadcast.
• If the alert is not active, no message is broadcast.
Tip
If you set Trigger Interval to 0, HART Command 119 is broadcast as soon as the alert is detected.
4. Set Retry Rate as desired.
Retry Rate controls the rate at which HART Command 119 is broadcast when event notification is
active.
• Default: 0.5 seconds
5. Set Maximum Update Time as desired.
Maximum Update Time controls the rate at which HART Command 119 is broadcast when event
notification is not active.
• Default: 60 seconds

10.6 Configure Modbus communications

ProLink III Device Tools → Configuration → Communications → Communications (Modbus)
Field communicator Not available
Modbus communications parameters control Modbus communications with the transmitter.
Modbus support is implemented on the RS-485 physical layer via the RS-485 terminals.
Important
Your device automatically accepts all connection requests within the following ranges:
Protocol: Modbus RTU (8-bit) or Modbus ASCII (7-bit) unless Modbus ASCII Support is disabled
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Configuration and Use Manual
Micro Motion Gas Specific Gravity Meters (SGM)
MMI-20020954