Simulate Mode - Analog Input Block; Manual Mode; Simulate Mode - Honeywell XNX Technical Manual

the Sensor Transducer Block to the AI Block for further processing. Along
with that data, a STATUS condition is also sent. Potential conditions are:
STATUS = GOOD, no problems with hardware or data
STATUS = BAD, problems found with either hardware or data
passed from Sensor Transducer Block
STATUS = UNCERTAIN,
The STATUS field is used by the AI block in the host.
Simulate Mode – Analog Input Block
When testing, it is possible to force data out of the analog input block.
This procedure could be used to test a control function or to test the
operation of the downstream device that received the data. Two methods
exist for data output:

Manual Mode

Manual mode forces the output data from the AI Block to the desired
value. It does not change the status of the STATUS parameter. To initiate
manual mode, place the TARGET MODE of the AI Block to MANUAL.
The OUT.VALUE can now be modified to reflect the desired output value.

Simulate Mode

Simulate mode forces the output data from the AI block to a desired
value. It also changes the STATUS parameter to the corresponding value.
To initiate Simulate mode:
1. Move the SIM switch on the transmitter to ON. The SIM switch
is located behind the transmitter, above the Foundation Fieldbus
connection terminal. The device is now in simulate mode.
2. Set the TARGET MODE to AUTO to change both the OUT.VALUE
and OUT.STATUS.
3. Set the SIMULATE_ENABLE_DISABLE parameter to the ACTIVE
state.
4. Enter the desired value into the SIMULATE_VALUE parameter to
force the output of the OUT.VALUE parameter, along with setting the
OUT.STATUS to the correct value.
If any errors occur while performing this procedure, reset the SIM switch.
This will clear error conditions and allow the device to resume operation.
XNX Foundation Fieldbus Technical Manual
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