Crystal APM Advanced Pressure Module - Manual (Page 10)

Communications  8
APM CPF Series Operation Manual
In order to avoid interruptions in the command execution process:
•
Turn on software ( XON / XOFF ) flow control on the PC side.
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Avoid long command lines (lines more than 96 characters).
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Send the *CLR command before starting the communication procedure.
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Check the error buffer sending the FAULT? command after the communication procedure is finished.
„„„„ „ REMOTE COMMANDS AND ERROR CODES
The following tables list all the commands, and their descriptions, accepted by the APM.
Common Commands
Command Description
*CLS (Clear Status) Clears the error queue.
*IDN? (Identification Query) Returns the manufacturer, model number, and firmware revision of the module.
*RST Resets the module to the power up state.
Module Commands
Command Description
DAMP Turns Damp on or off.
DAMP? Returns if Damp is on or off.
FAULT? Returns the most recent error code.
PRES_UNIT Sets the pressure unit for the indicated display.
PRES_UNIT? Returns the pressure unit from the indicated display.
VAL? Returns the measured values.
ZERO_MEAS Zeros the pressure module.
ZERO_MEAS? Returns the zero offset of the pressure module.
CAL_STORE This command must be sent anytime a parameter has changed.