Teledyne HPM-2002-OBE Device Status, Default RS232/485 Specifications, 9600, Character Length

Restore Factory Defaults	/#<CR>	Restore Calibration Register Default Values
Set Zero	/0 <CR>	Store Present Pressure as Instrument ZERO
		(if Piezo <32 Torr & Pirani <50 mTorr)
Force Zero	/!<CR> Override Limit Checks and Store Present
		Pressure as Instrument ZERO

3.3.7.Device Status

When requested to transmit its status the HPM-2002-OBE responds with a five digit number which is explained in the following:

digit#:	1	2	3	4	5
Serial Receiver Overflow
	=4
Main Board EEPROM Error	=2
Probe EEPROM (any) Error	=1
Probe EEPROM Not Responding
		=8
Probe EEPROM Read Error		=1
Probe EEPROM Checksum Error
			=4
Probe EEPROM Verification Error			=2
Probe EEPROM Identification Error			=1
Communications Syntax Error
				=4
Piezo Sensor Bad (voltage out of range)				=2
Pirani Sensor Bad (voltage out of range)				=1
High Setpoint Alarm (pressure exceeds setpoint)
					=4
Low Setpoint Alarm (pressure less than setpoint)					=2
Gas# Changed (not the same as when unit last calibrated)					=1

3.3.8.Default RS232/485 Specifications

Baud Rate	9600
Character Length	Eight data bits
Parity	None
Stop Bits	1
RS 485 Universal Address	00

HPM-2002-OBEVacuum Gauge Page 20 of 39