VAT 653 Series - RS232 Interface Commands (IC Protocol); RS232 Command Syntax; Control Commands

INSTALLATION Series
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68/129 Edition 2019-05-03 963283EA
4.11 RS232 interface commands (IC protocol)
4.11.1 RS232 command syntax
Commands and values are case sensitive.
Acknowledgement within 10ms after reception of command.
Wait for acknowledgement before sending a new command.
Command termination of each command is CR and LF.
CR = Carriage Return (0D hexadecimal), LF = Linefeed (0A hexadecimal)
4.11.2 Control commands
Control function
Command Acknowledgement
Description
CLOSE VALVE
Set
C: C:
Valve will close.
OPEN VALVE
Set
O: O:
Valve will open.
HOLD
Set
H: H:
This function stops the valve at the current position. It is effective in PRESSURE
CONTROL and POSITION CONTROL. The function can be revoked by a POSITION
CONTROL, PRESSURE CONTROL, OPEN VALVE or CLOSE VALVE command.
POSITION CONTROL
Set
R:aaaaaa R:
Get
i:38 i:38aaaaaaaa
data length for Set 6 characters, for Get 8 characters
aaaaaa position SETPOINT, value depends on configuration,
refer to «Setup commands, COMMUNICATION RANGE»
for details
Change to POSITION CONTROL mode and transfer of position SETPOINT value resp.
reading of position SETPOINT.
Remark: Reading returns position setpoint only in case pressure control is not selected.
PRESSURE CONTROL
Set
S:aaaaaaaa S:
Get
i:38 i:38aaaaaaaa
data length 8 characters
aaaaaaaa pressure SETPOINT, value depends on configuration,
refer to «Setup commands, COMMUNICATION RANGE»
for details
Change to PRESSURE CONTROL mode and transfer of pressure SETPOINT resp.
reading of pressure SETPOINT.
Remark: Reading returns pressure setpoint only in case pressure control is selected,
otherwise position setpoint is returned.