VAT 650 TJ Series Installation, Operating, & Maintenance Instructions page 44

Control function
POSITION CONTROL
CLOSE VALVE
OPEN VALVE
PRESSURE CONTROL
VAT Vakuumventile AG, CH-9469 Haag, Switzerland
Tel ++41 81 771 61 61 Fax ++41 81 771 48 30 Email
Installation, Operating & Maintenance Instructions
Series 650 DN 100-250 (I.D. 4" - 10"), RS485
Command
Set [R:][xxxxxx][CR][LF]
Get [i:38][CR][LF]
data length 6 characters for writing
8 characters starting with double zero for reading
xxxxxx position SETPOINT, value depends on configuration,
refer to «RS485 setup commands, RANGE CONFIGURATION»
for details
Change to POSITION CONTROL mode and transfer of position SETPOINT value resp.
reading of position SETPOINT.
Note: Reading returns position setpoint only in case pressure control is not selected.
Set [C:][CR][LF]
Valve will close.
Set [O:][CR][LF]
Valve will open.
Set [S:][0xxxxxxx][CR][LF]
Get [i:38][CR][LF]
data length 8 characters starting with a zero
xxxxxxx pressure SETPOINT, value depends on configuration,
refer to «RS485 setup commands, RANGE CONFIGURATION»
for details
Change to PRESSURE CONTROL mode and transfer of pressure SETPOINT resp. reading
of pressure SETPOINT.
Note: Reading returns pressure setpoint only in case pressure control is selected,
otherwise position setpoint is returned.
reception@vat.ch www.vatvalve.com
Acknowledgement
(within 10ms after reception of command)
Description
[R:][CR][LF]
[i:38][00xxxxxx][CR][LF]
[C:][CR][LF]
[O:][CR][LF]
[S:][CR][LF]
[i:38][0xxxxxxx][CR][LF]
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2007-06-12
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