•
136 Read Status:
Reads and displays the status flags. These flags describe error conditions
that have occurred since the last time they were cleared. The following is the list of possible
codes.
POSITION_ERROR:
The position error occurs when the valve position differs from the
requested position by more than the Position Error Band for more than the position error
Time 1.
POSITION_SENSOR_ERROR:
The position sensor is oriented out of its valid range, or
has failed or its connection is open.
PRESSURE_SENSOR_ERROR:
The pressure sensor has failed.
CURRENT_SENSOR_ERROR:
The input signal measurement sensor has failed.
REFERENCE_VOLTAGE_ERROR:
The primary reference voltage inside the SVI is
incorrect and all other measurements will likely be affected.
BIAS_OUT_OF_RANGE:
The signal to the I/P, which causes no valve movement
(called the bias), has changed and is outside of the normal operating range.
SELF_CHECK_FAILURE:
On startup, the SVI did not pass a self-check.
SOFTWARE_ERROR:
An inconsistency has been detected within the SVI.
RESET_OCCURRED:
A reset has occurred either because of a power interruption or
because of an external request for reset.
DATA_OVERRUN:
The SVI is not processing acquired data.
INTERNAL_TEMP_ERROR:
Internal temperature of the SVI is above or below the
rated temperature.
EEPROM_WRITE_FAILED:
A write to the SVI's internal memory failed.
FIND_STOPS_FAILED:
The calibration procedure for position failed to find reasonable
values.
•
138 Clear Status:
Clears the status flags.
•
137 Read Limit Switches:
Reads and displays the status of two limit switches if they are
configured and connected. The limit switches may be ON (closed) or OFF (open).
•
139 Read Continuous Diagnostic Data:
Reads and displays the continuous diagnostic data
including total accumulated travel the valve has made, the number of cycles (direction
changes), the time the valve has been open, the time the valve has been closed, and the time
the valve has spent throttling near the seat (defined by the Near Closed parameter in the
Configuration/Options window).
•
191 Read Signature Results:
Displays the results of the last run of standard valve signature
test. The results include friction, lower and upper spring ranges, supply pressure, stroking
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