AMA Instruments The GC 5000 BTX, Operating Manual, Page: 39 / 152

Operating Manual GC 5000 BTX; Version 5 – 11/2010 37
Remote control
Gesytec specifications
Validation / Calibration on cal. Gas on request Cal
Val
In case a calibration run starts via protocol you have to select if the run is
handled as a new calibration (
Cal) or validation ( Val, no new calibration
data is produced). In both cases calibration valves or modules are switched
to the corresponding calibration input or level.
The following charts show the configuration of the data bytes which can be
sent from the GC 5000 BTX via the Gesytec II protocol.
Control byte
Bit 0 Start sampling
Bit 1 Zero gas on (calibration gas 1)
Bit 2 Span gas on (calibration gas 2)
Bit 3 Not used
Bit 4 Not used
Bit 5 Not used
Bit 6 Not used
Bit 7 Not used
Status byte
Bit 0 System off
Bit 1 Maintenance / Stand alone mode
Bit 2 Zero gas running (calibration gas 1)
Bit 3 Span gas running (calibration gas 2)
Bit 4 Program step sampling running
Bit 5 New results
Bit 6 Not used
Bit 7 Not ready
Error byte
Bit 0 Pre-cooling alarm enrichment stage
Bit 1 Sample alarm
Bit 2 Carrier gas alarm
Bit 3 Ignition of FID not possible
Bit 4 FID too cold
Bit 5 FID too cold for 8 minutes
Bit 6 Not used
Bit 7 Communication breakdown to MFC /
Temp. controller
Status and error byte show the current status of the analyzer.
Note: The status and error bytes will be transmitted as well. While
transmitting results, these status and error bytes indicate the analyzer
status during data acquisition only.
Protocol bytes
Validation/
Calibration on
calibration gas
on request