INFICON LDS3000 Modular Leak Detector Interface description - Manual (Page 31)

LD Protocol 31
5.3 Commands
Comm
and dez
Com
mand
hex
Name R/W Data type
Min-, Def.-, Max-
value
Meaning
Status
word
Bit 0
Status word in
slave telegram
Device state Bit 0
Status
word
Bit 1
Status word in
slave telegram
Device state Bit 1
Status
word
Bit 2
Status word in
slave telegram
Device state Bit 2
Status
word
Bit 3
Status word in
slave telegram
Device state Bit 3
Status
word
Bit 4
Status word in
slave telegram
ZERO
Status
word
Bit 5
Status word in
slave telegram
Still warning
Status
word
Bit 6
Status word in
slave telegram
Sniffer Key
Status
word
Bit 7
Status word in
slave telegram
USER CHANGE
Status
word
Bit 8
Status word in
slave telegram
PLC Output Change
Status
word
Bit 9
Status word in
slave telegram Trigger 1
1 = Trigger 1 exceeded
Status
word
Bit 10
Status word in
slave telegram Trigger 2
1 = Trigger 2 exceeded
Status
word
Bit 11
Status word in
slave telegram
not used
Status
word
Bit 12
Status word in
slave telegram
not used
Status
word
Bit 13
Status word in
slave telegram
Device warning
Status
word
Bit 14
Status word in
slave telegram
Device error
Status
word
Bit 15
Status word in
slave telegram
Syntax / Command error
0 0 NOP R NO_DATA "No operation", replies without data
1 1 Start W NO_DATA Switch from "standby" to "measure"
2 2 Stop W NO_DATA Switch from "measure" to "standby"
4 4 Start calibration W UINT8
Start calibration:
0 = internal
1 = external
2 = dynamic
3 = machine/sniff factor
5 5 Clear error W NO_DATA Clear Error or Warning
6 6 Zero R/W UINT8
0 = Zero "Off"
1 = Zero "On" respectively update zero
value
9 9
Emission
nominal status
R/W UINT8
Emission nominal status
0 = off
1 = on