Emerson MICRO MOTION 1500, Configuration And Use Manual, Page: 144 / 282

134 Micro Motion Series 1000 and Series 2000 Transmitters
Troubleshooting
12.10 Simulation mode
Simulation allows you to set the outputs to simulate process data for mass flow, temperature, and
density. Simulation mode has several uses:
• It can help determine if a problem is located in the transmitter or elsewhere in the system. For
example, signal oscillation or noise is a common occurrence. The source could be the PLC, the
meter, improper grounding, or a number of other factors. By setting up simulation to output a
flat signal, you can determine the point at which the noise is introduced.
• It can be used to analyze system response or to tune the loop.
If simulation mode is active, the simulated values are stored in the same memory locations used for
process data from the sensor. Therefore, the simulated values will be used throughout transmitter
functioning. For example, simulation will affect:
• All mass flow, temperature, or density values shown on the display or reported via outputs or
digital communications
• The mass total and mass inventory values
• All volume calculations and data, including reported values, volume totals, and volume
inventories
Accordingly, do not enable simulation when your process cannot tolerate these effects, and be sure to
disable simulation when you have finished testing.
Note: Simulation mode requires the enhanced core processor.
Note: Unlike actual mass flow and density values, the simulated values are not
temperature-compensated.
Note: Simulation does not change any diagnostic values.
Simulation mode is available via ProLink II and the Communicator. To set up simulation, follow the
steps below:
1. Enable simulation mode.
FO phase on Channel C
does not change with flow
direction (Config IO
transmitters only) Wrong configuration setting FO mode must be set to Quadrature for phase to
automatically track flow direction.
DI is fixed and does not
respond to input switch
(Config IO transmitters only) Possible internal/external power
configuration error Internal means that the Configurable I/O will
supply power. External means that an external
pull-up resistor and source are required. Verify
configuration setting is correct for desired
application.
Cannot configure Channel B
for DO1 operation (Config IO
transmitters only) Channel C is configured as FO FO and DO1 use the same circuitry and cannot
run simultaneously. Configure Channel B as FO
and Channel C as DO2.
Cannot configure Channel C
for FO operation (Config IO
transmitters only) Channel B is configured as DO1 FO and DO1 use the same circuitry and cannot
run simultaneously. Configure Channel B as FO
and Channel C as DO2.
Table 12-2 I/O problems and remedies continued
Symptom Possible cause Possible remedy