INFICON HLD6000 Refrigerant Leak Detector Interface Description - Manual (Page 32)

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4.3.2 Write Process Data (Leak Detector
PLC)
These 29 data bytes are send periodically from the leak detector to the field bus master (e.g. a programmable logic controller):
Attention: PROFIBUS and PROFINET IO sends high byte first, DeviceNet and EtherNet/IP sends low byte first.
Title Byte Bit Name Meaning
Similar to IO1000
Output
Similar to RS232
ASCII cmd.
Similar to RS232
LD cmd.
status word
1
(low
byte)
0 Device state 0=Run up
1=Standby
2=Measure
3=Calibration internal
4=Calibration external
5=Proof
6=Not used
7=Not ready
Run up, CAL active,
Proof active, Error,
Measure
*STATUS?
status word
1
2
3 not used
4 not used
5 Still pending device
warning
Warning *STATUS:WARNINGBITS?
6 Sniffer key 0 = Sniffer probe key not pressed
1 = Sniffer probe key pressed
Sniffer button *STATUS:SNKEY?
7 not used
2
(high
byte)
0 Calibration request
active
1= Leak detector requests a calibration CAL_REQUEST *STATUS:WARNINGBITS?
1 Setpoint Trigger1, Trigger2 *STATUS:TRIGGER?
2 Active setpoint
3 not used
4 Light barrier Light barrier
5 Unconfirmed device
warning
6 Device error Error *STATUS:ERROR?
7 not used