Flame Detection Shared Variables

The flamedetection server AP/AW which is running the multisvc RPC server has the Foxboro shared variables to allow flamedetection data to be displayed on the Display Manager or Historian. By putting the shared variables on the same AP/AW the node bus traffic will not be affected by the polling of the data from the detector gateway.

The shared variables are created on bootup by the startup file /opt/nrg/bin/omstart on the AP/AW. After these are created then the multisvc server is started.
The shared variables have the form-
UNIT FD PULVERISER BURNER VALUE
eg
3FDA10 ie Unit 3, A Pulveriser, Burner 1, 6" Tube DC
3FDA11 ie Unit 3, A Pulveriser, Burner 1, 6" Tube AC
3FDA12 ie Unit 3, A Pulveriser, Burner 1, 6" Tube AC-SCALED
3FDA13 ie Unit 3, A Pulveriser, Burner 1, Porthole DC
3FDA14 ie Unit 3, A Pulveriser, Burner 1, Porthole AC
3FDA15 ie Unit 3, A Pulveriser, Burner 1, Porthole AC-SCALED
3FDA16 ie Unit 3, A Pulveriser, Burner 1, Status

The status bits (word 6) are of the form-
Bit 0 - 6" Tube Flame (True = on)
Bit 1 - 6" Tube Dull (False = Dull)
Bit 2 - Port Tube Flame (True = on)
Bit 3 - Port Tube Dull (False = Dull)
Bit 4 - Port Gain (True = High Gain)
Bit 5 - Feeder Running (False = running)
Bit 6 - Oil Firing (False = firing)
Bit 7 - Shutter Check (False = in progress)
Bit 8 - Gateway Fail (False = OK)
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Compiled by Darryl Bond
Mail to:Darryl Bond

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