Installation, Operating & Maintenance Instructions
Series 615 DN 63-100 (I.D. 2.5“ - 4”), RS232
VAT Vakuumventile AG, CH-9469 Haag, Switzerland
Tel +41 81 771 61 61 Fax +41 81 771 48 30 [email protected] www.vatvalve.com
290227EA
2011-06-24
50/79
Command
Acknowledgement
(within 10ms after reception of command)
Setup function
Description
Set [Z:][CR][LF]
[Z:][CR][LF]
ZERO
This command initiates ZERO to compensate for offset of gauge(s).
Note: Refer to «ZERO» for correct zero procedure.
Set [c:6002][xxxxxxxx][CR][LF]
[c:60][CR][LF]
PRESSURE
ALIGNMENT
data length: 8 characters
xxxxxxxx
System base pressure, value depends on configuration,
refer to «RS232 setup commands, RANGE CONFIGURATION»
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.
Set [L:][0xxxxxxx][CR][LF]
[L:][CR][LF]
LEARN
data length 8 characters starting with a zero
xxxxxxx
Pressure limit for LEARN, value depends on configuration,
refer to «RS232 setup commands, RANGE CONFIGURATION»
for
details
This command starts LEARN.
By OPEN VALVE, CLOSE VALVE or POSITION CONTROL commands the routine may be
interrupted.
Note: Without LEARN the PID controller is not able to perform pressure control. Refer to
«LEARN» for correct learn gas flow and procedure.
Set [d:][pppdddddddd][CR][LF]
[d:][ppp][CR][LF]
DOWNLOAD
LEARN DATA
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.
Note: Make sure that all 104 data sets will be downloaded.
Get [u:][ppp][CR][LF]
[u:][pppdddddddd][CR][LF]
UPLOAD
LEARN DATA
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.
Note: Make sure that all 104 data sets will be uploaded.