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

Page 64
Image 64
Varec 8315 Series manual PntStatus will be set to indicate the failure