page 87 of 121
Write commands
”
CVC 2000
”
Command
Operation
Parameter
Description
OUT_MODE
function
1
2
3
30
31
32
continuous pumping
vacuum control without automatic
vacuum control with automatic
optional: sensitivity: low
optional: sensitivity: normal
optional: sensitivity: high
OUT_SP_1
set vacuum
XXXX
unit (mbar/Torr/hPa) according to pre-
selection; see respective function for
parameter range
OUT_SP_V
set vacuum
with venting*
XXXX
unit (mbar/Torr/hPa) according to pre-
selection; see respective function for
parameter range
OUT_SP_2
set frequency
XX.X
motor speed in Hz
(99.9 for “HI”; 99.8 for 3000 rpm)
OUT_SP_3
vacuum for switch
on (VACUU
•LAN)
XXXX
unit (mbar/Torr/hPa) according to pre-
selection; see respective function for
parameter range
OUT_SP_4
delay
XX:XX
hh:mm (hours:minutes)
OUT_SP_5
vacuum for auto-
matic switching
off
XXXX
unit (mbar/Torr/hPa) according to pre-
selection; see respective function for
parameter range
OUT_SP_6
time for automatic
switching off
(VACUU
•LAN)
XX:XX
hh:mm (hours:minutes)
START
starting process
control
STOP
stopping process
control
1
2
termination of process control
termination of process control and stor-
age of the current pressure as new set
point
REMOTE
remote
operation**
0
1
set controller to local operation
set controller to remote operation
OUT_VENT
driving venting
valve
0
1
close venting valve (not automatically)
open venting valve (process control
stopped)
* Pressure setting with venting is only possible in ”Vac control” function
if a venting valve is connected and configured, and vacuum control is
started. The venting valve opens automatically if the actual pressure
is at least 7.5 Torr (10 mbar) below the preset pressure. Automatic
venting becomes inactive if vacuum control is stopped (by pressing
”START/STOP” or ”VENT”), a pressure value is set using the com-
mand OUT_SP_1, or if the function is changed. Activate the command
OUT_SP_V again if necessary.
