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When HART Address is changed, some configuration tools will automatically change Loop
Current Mode.
Tip
Always verify Loop Current Mode after setting or changing HART Address.
Procedure
1.
Set HART Address as appropriate for your HART network.
The default address is 0. This is the recommended value unless the transmitter is in a
multidrop network.
2. Set Loop Current Mode to Enabled.
10.16 Check HART burst mode
HART burst mode can cause the transmitter to output unexpected values. Burst mode is
normally disabled, and should only be enabled if another device on the HART network
requires burst mode communication.
1. Check to see if burst mode is enabled or disabled.
2. If burst mode is enabled, disable it.
10.17 Check the trimming of the mA output
If the trim values for the mA output are inaccurate, the transmitter will under-compensate
or over-compensate the output.
1. Trim the output, following the standard procedure.
2. If this does not correct the problem, contact Micro Motion.
10.18 Check Lower Range Value and Upper Range
Value
If the process conditions fall below the configured Lower Range Value (LRV) or rise above the
configured Upper Range Value (URV), the transmitter outputs may send unexpected values.
1.
Make a note of your current process conditions.
2. Check the configuration of the LRV and URV.
Troubleshooting
170 Micro Motion
®
Model 1500 Transmitters with Analog Outputs