INFICON LDS3000 Modular Leak Detector Interface description - Manual (Page 40)

40 LD Protocol
450 1C2
Date+Time
[YMDhms]
R/W UINT8[6]
Date and time
use only with array-index 255 (all bytes)
year (1..99), month, day,
hour (0..23), min, sec
452 1C4
Min pressure
sniff
R/W FLOAT 1E-3, 4E-1, 18
Minimum pressure p1 im mbar for sniff
mode. If pressure falls below this value,
warning 540 (Flow too low) is generated.
453 1C5 Max pressure R/W FLOAT 1E-3, 18, 18
Maximum pressure p1 in mbar for sniff
and vacuum. If pressure rises above this
value, warning 520 (Pressure too high) is
generated.
499 1F3
Fan output
TMP controller
R/W UINT8 0, 0, 1
0 = always on
1 = temperature controlled
only valid after restart of leak detector
501 1F5
TMP rotation
speed
R/W UINT16 1000, 1500, 1500
TMP rotation speed
1000, 1500Hz
502 1F6 Amplifier range R/W UINT8 0, 3, 3
Amplifier range
Amplifier control location 504
automatically set (not auto)
0 = 13 MOhm
1 = 470 MOhm
2 = 15 GOhm
3 = 500 GOhm
504 1F8
500GOhm
value
R/W FLOAT
4.5E1, 5E11,
5.5E11Ohm
500GOhm value
506 1FA Mass R/W UINT8 2, 4, 4
2 = Mass 2 (H2)
3 = Mass 3
4 = Mass 4 (Helium)
508 1FC
Amplifier
control location
R/W UINT8
0 = controlled by
write command
502
1 = controlled
auto
Amplifier control location
520 208
Calibration
factors vacuum
R/W FLOAT[3] 1E-2, 1, 5000
Calibration factors for vacuum mode
Index 0: mass 2
Index 1: mass 3
Index 2: mass 4
521 209
Calibration
factors sniff
R/W FLOAT[3] 1E-2, 1, 100
Calibration factors for sniff mode
Index 0: mass 2
Index 1: mass 3
Index 2: mass 4
522 20A
Machine
factors vacuum
R/W FLOAT[3] 1E-4, 1, 1E4
Machine factors for vacuum mode
Index 0: mass 2
Index 1: mass 3
Index 2: mass 4
Comm
and dez
Com
mand
hex
Name R/W Data type
Min-, Def.-, Max-
value
Meaning