Series 642 INSTALLATION
742280ED Edition 2017-11-24 71/
Setup function
Command Acknowledgement
Description
ZERO
Set
Z: Z:
This command initiates ZERO to compensate for offset of gauge(s).
Remark: Refer to «ZERO» for correct zero procedure.
PRESSURE
ALIGNMENT
Set
c:6002aaaaaaaa c:60
data length: 8 characters
aaaaaaaa System base pressure, value depends on configuration,
refer to «RS232 setup commands, COMMUNICATION RANGE»
for details. Alignment range is equivalent to max. +/-1.4V sensor signal.
This command aligns PRESSURE to a certain value. Also SENSOR READING will be
aligned accordingly. It might be used instead of ZERO in case base pressure is not low
enough.
LEARN
(adaptive)
Set
L:0aaaaaaaa L:
data length 8 characters
aaaaaaaa Pressure limit for LEARN, value depends on configuration,
refer to «RS232 setup commands, COMMUNICATION RANGE»
for details
This command starts LEARN.
By OPEN VALVE, CLOSE VALVE or POSITION CONTROL commands the routine may
be interrupted.
Remark: Without LEARN the PID adaptivecontroller is not able to perform pressure
control. Refer to «Adaptive algorithm» for correct learn gas flow and procedure.
DOWNLOAD
LEARN DATA
Set
d:pppdddddddd d:ppp
data length 3 + 8 characters
ppp pointer, 000 ... 103
dddddddd single data set
This command downloads the LEARN data sets from the host computer to the valve.
There are a total number of 104 data sets. Each data set consists of 8 data bytes and
needs to be uploaded separately.
Remark: Make sure that all 104 data sets will be downloaded.
UPLOAD
LEARN DATA
Get
u:ppp u:pppdddddddd
data length 3 + 8 characters
ppp pointer, 000 ... 103
dddddddd single data set
This command uploads the LEARN data sets from the valve up to the host. There are a
total number of 104 data sets. Each data set consists of 8 data bytes and needs to be
uploaded separately.
Remark: Make sure that all 104 data sets will be uploaded.
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