Documents are only to be used and distributed completely and unchanged, especially including the section ”Safety information”. This is page 39 of a document consisting of
49 pages. The instructions for use describe only the actual product. If the product is older or newer than the date of writing, it is strictly the users´ responsibility to check carefully
the validity of the document (if in doubt, order appropriate instructions for use). 99 90 34 / 12/09/2003
Write commands
Function
Command
Parameter
Description
selected pressure
OUT_SP_1
XXXX
unit according to preselection
(0001 to 1060 mbar (hPa) or 0001 to 0795 Torr)
selected pressure
OUT_SP_V
XXXX
unit according to preselection
with venting*
(0001 to 1060 mbar (hPa) or 0001 to 0795 Torr)
selected frequency
OUT_SP_2
XX.X
Hz (01.0 to 60.0 in steps of 0.5 Hz or 99.9 for “HI”)
pressure for restart
OUT_SP_3
XXXX
unit according to preselection
(VACUU•LAN)
(see OUT_SP_1)
time for automatic
OUT_SP_4
XX:XX
hours:minutes
switching off (VACUU•LAN)
automatic switching off OUT_SP_5
XXXX
unit according to preselection
(pressure control)
(see OUT_SP_1) or ”0000” for automatic
switching off (“AE”)
operation mode
OUT_MODE
X
1: continuous pumping
2: pressure control without automatic
3: pressure control with automatic
driving air admittance
OUT_VENT
X
0: air admittance valve close (not automatically)
valve
1: air admittance valve open (process control
stopped)
starting process control
START
stopping process control STOP
X
1: termination of process control
2: termination of process control and storage of
the actual pressure as new set point
The single abbreviations of a command are separated by underscores (ASCII 5FH).
Command and parameter are separated by ignore characters (ASCII 20H).
The string is terminated with <CR><LF> (ASCII 0DH, ASCII 0AH).
Set the values with leading zeros if necessary.
Connector assignment
2: RxD
3: TxD
4: DTR
5: Mass
7: RTS
8: CTS
*
Pressure setting with venting is only possible in operation mode ”Pressure control” if an air admittance
valve is connected and configurated and pressure control is started. The air admittance valve opens
automatically if the actual pressure is 10 mbar below the preset pressure. Automatic venting becomes
inactive if pressure control is stopped (STOP or VENT), setting a pressure value using the command
OUT_SP_1 or if the operation mode is changed. Activate the command OUT_SP_V again if neces-
sary.