Head
GA10218_0101 - 5/2002
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Description of operation mode of the Digital In.
The PLC inputs are working only if the correct location of control has been
set (see
6.6.4.1
)
The actual pin setting can be seen under Info/View internal data/page8.
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 chosen in chap.
6.6.1.2
then ventilate it
additionaly.
Purge/gas ballast:
Change from low to high: activate purge/gas ballast
Change from high to low: deactivate purge/gas ballast
Clear:
Change from low to high: confirm error message
CAL:
Change from low to high:
When machine is in stand-by mode: start internal calibration. In case
machine is measurement mode: start external calibration. (Premise: exter-
nal calibration test leak has to be open and leak rate signal is stable)
Change from high to low:
External calibration: approve that external test leak is closed and leak rate
signal is stable.
High means: U > 13V(approximately 7mA)
Low means: U < 7V
The level of the logic signals must not exceed 35V.
CAL intern:
The Machine starts an internal calibration independent from the mode the
machine is running in.
CAL extern:
The Machine starts an external calibration independent from the mode the
machine is running in.
Signals at these inputs are only accepted if the location of control is set to
„PLC“ or „Local and PLC“. Refer to Chapter
6.6.4.1
