INFICON UL1000 Helium leak detector - Manual (Page 29)

Installation
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CAL Request
Is opend in case of calibration request. During external calibration a open output
indicates that the external calibrated leak has to be closed.
Error
Open when an error is shown.
Warning
Open when a warning is shown.
Purge
Closed when purge is active.
Measure
Closed in case a machine is in measure mode.
Recorder Strobe
Closed in case recorder output is invalid. Only used when record output is set on
„leak rate“.
2.3.2.3 Digital In
These inputs can be used to control the UL1000 and UL1000 Fab with a
programmable logic control (PLC).
Description of operation mode of the Digital In.
Zero:
Change from low to high: activate zero
Change from high to low: deactivate zero
Start:
Change from low to high: activate START
Stop:
Change from low to high: activate STOP
When this inlet is longer high than anounced in chapter
6.6.1.2 then ventilate it
additionaly.
Pin Assignment
1 +24V, bridged with pin 1 of socket „Digital Out“
2 GND_24V
3 Start
4 Stop
5 Zero
6 CAL
7 Clear
8 Purge
9 Free
10 Free
11 Common dig
12 Free
13 Free
14 Free
15 Free
16 Free