Varec 8315 Series manual PntStatus will be set to indicate the failure

8315 L&J Tankway Software Description		TankGate Interface
	Configuration	Function
	Parameters
	Maxtime	Specifies the maximum time (in secs) between automatic Change of
		State data being sent to the Host in response to a Change of State
		Request. Report must be set to either Low or High for the Value
		parameter to be sent in response to a Change of State Request. A value
		of 0 disables this option. Non-zero values cause responses to be sent
		even if the value has not changed since the last message. The
		maximum is 255 seconds. The default is 240.
	Watchdog	Enables the watchdog task on the Motherboard. The watchdog task
		monitors the LJ1000 point on the Model 8315 and verifies it is scanning
		for gauges. If the Model 8315 fails, the 0x4000 and the 0x0010 bits of
		the PntStatus will be set to indicate the failure.

Dynamic Parameters	Function
Level	Floating point value representing the tank level (in feet).
Temp	Floating point value representing the tank temperature (in
	Fahrenheit).
PntStatus	Integer HEX value indicating status of point. Values are:
	0x0001: Dual Band Error
	0x0002: Scan Timeout
	0x0004: Internal Module Error
	0x0008: Missing Comm Board
	0x0010: Gauge Not Responding
	0x0020: Blown Transmit Fuse
	0x0040: Parity Error
	0x0080: Tankway Error
	0x4000: Failure of the Model 8215. This bit is set if the Watchdog
	task on the Motherboard determines that the Model 8215 has
	stopped updating.
GaugeStatus	Byte value indicating status of the gauge. Values are:
	0x01: Dual Band Error
	0x02: Temperature value is positive
	0x04: Transmitter Error
	0x08: Missing Comm Board
AlarmTime	Time that alarm first occurred. The point is in alarm when the
	PntStatus is non zero.
Elapse	Time of the last scan.
ScanTime	Time of the last good reading. A reading is considered good if it
	has no parity or time-out error, and has passed the filter criteria.
Raw1	Raw data from gauge. Value reported as hexadecimal value.
Raw2	Raw data from gauge. Value reported as hexadecimal value.
PntCheckSum	CRC-16 Checksum for point's static Configuration Parameters.

54 Installation and Operations Manual