Configure Update Rate - Emerson Micro Motion 2700 Configuration And Use Manual

Configure device options and preferences
5.4.1

Configure Update Rate

Display
ProLink III
Field Communicator Configure > Manual Setup > Measurements > Update Rate
Overview
Update Rate controls the rate at which process data is polled and process variables are
calculated. Update Rate = Special produces faster and "noisier" response to changes in the
process. Do not use Special mode unless required by your application.
Tip
For systems with a standard core processor, Special mode can improve performance for applications
with entrained air or Empty-Full-Empty conditions. This does not apply to systems with an enhanced
core processor.
Prerequisites
Before setting Update Rate to Special:
•
•
Procedure
1.
2.
76
Not available
Device Tools > Configuration > Process Measurement > Response > Update Rate
Check the effects of Special mode on specific process variables.
Contact customer support.
Set Update Rate as desired.
Option Description
Normal
All process data is polled at the rate of 20 times per second (20 Hz).
All process variables are calculated at 20 Hz.
This option is appropriate for most applications.
Special A single, user-specified process variable is polled at the rate of 100 times per sec-
ond (100 Hz). Other process data is polled at 6.25 Hz. Some process, diagnostic,
and calibration data is not polled.
All available process variables are calculated at 100 Hz.
Use this option only if required by your application.
If you change Update Rate, the settings for Flow Damping, Density Damping, and
Temperature Damping are automatically adjusted.
If you set Update Rate to Special, select the process variable to be polled at 100 Hz.
Micro Motion Model 2700 Transmitters with Intrinsically Safe Outputs