Varec 4000 manual Troubleshooting, ATT Error Status Conditions, Error Message Description

Maintenance and Troubleshooting Tank Gauge Transmitter

4.3Troubleshooting

The ATT has provisions for hardware alarm inputs, software generated setpoint alarms, and other alarm conditions.

Alarm and error status conditions are available to the Model 1200, to the host Computer, and to the optional ATT display. When in the Model 1200 display mode, the Diagnostic Status Menu displays only active alarm and error status conditions. General status conditions such as HW IN 1 are always displayed.

4.3.1 ATT Error Status Conditions

Error Message	Description
BAD COMM BOARD	The communication board did not pass the loopback test. See
	the description of the host communication loop-back tests.
BAD CPU BOARD	RAM, EPROM, or EEPROM has failed.
BAD EEPROM CHECKSUM	The EEPROM configuration data did not match the EEPROM
	stored checksum. Examine all configuration parameters, make
	any changes, and then use the "EXIT AND SAVE" option under
	the Main Menu.
BAD EEPROM	The value written to EEPROM memory did not match the value
	read back from EEPROM memory. This is a critical alarm.
	Contact the factory.
BAD EPROM	The program EPROMs have failed the EPROM test. This is a
	critical alarm. Contact the factory.
BAD LEVEL	The level input is invalid.
BAD RAM	The RAM has failed the RAM test. This is a critical alarm.
	Contact the factory.
BAD RTD RESISTANCE	The ATT detected an invalid RTD resistance. Usually due to an
	open or shorted RTD input.
BAD TEMP	The ATT detected an invalid temperature. Usually due to an
	RTD failure.
CALC ERROR	Calculation overflow or divide by zero error.
CONFIG ERROR	See the ATT configuration error checking in this section.
LOW BATTERY	The battery used to maintain the encoder circuitry has a low
	voltage.
NO CALC ERROR	The ATT can no longer perform calculation. See information
	under the Stop Calculations Conditions section.
OFFLINE MODE	A Model 1200 is connected to the ATT at tank side. No ATTI
	Bus sensor communication is active.
RTD UNCOVERED	The Resistive Temperature Device (RTD) sensor is uncovered.

28 Installation and Operations Manual