Varec 8300 series, Installation And Operation Manual, Page: 62 / 150

Tank Gate Interface
52 Installation and Operations Manual
5.3.2 Application
The GSIME point provides an interface to GSI Model 2000 Tank Gauge Transmitters. Tank gauges
are connected directly to a 8303 Dual RS-485 Communications Interface Module. The ID must
match the unit address of the GSI transmitter and the Baud Rate must match the Baud Rate of
the gauge.
The DataMode must match the engineering units of the gauge. Conversion from Metric to
English (or vice-versa) can be performed be setting the LevelConvert and the TempConvert
parameters in the MODSCAN point associated with the GSIMB point. The Level can be offset by
entering a value for the LevelOffset parameter. The LevelOffset is added to the Level after any
conversion have be performed. Likewise, the TempOffset can be used to provide a temperature
offset.
Dynamic Parameters Function
Level IEEE Floating point value representing the tank level. The data is returned
in the format specified during the configuration of the gauge.
Temp Floating point value representing the product temperature. The data is
returned in the format specified during the configuration of the gauge.
PntStatus Byte value indicating status of point. Values are:
0x0000: No Error
0x0001 No Response from transmitter
0x0002: Data is invalid
0x0004: Command Timeout
0x8000: Gauge did not response to last request (pre-fail)
GaugeStatus Byte value indicating status of the gauge. Refer to the transmitter manual
for details on the
GaugeStatus
Reserved Reserved.
Reserved2 Reserved Value (32 bit Register 0048)
Elapse Time of the last scan
Interval Amount of time (in HR:MIN:SEC) between scans of the gauge
PntCheckSum CRC-16 Checksum for point’s static Configuration Parameters.