Agilent Technologies TwisTorr 74FS AG Rack Mode D'emploi page 282

17 Technical Information
Profibus Option
Output Buffer
Tab. 20 Output buffer
Offset Size
Unit Res
Byte Byte
0 1
282/300
Range Description
B = Start/Stop
7
0 = Stop, 1 = Start
B = Low Speed
6
This bit set the pump target speed to "low speed
value" (Output Buffer, Offset 3), otherwise the
target speed is set to "high speed value" (Output
Buffer, Offset 1).
0 =Off, 1 =On
B – Soft Start
5
This bit activates the soft start function which run-
up the pump smoothly. Please activate this function
only if the pump has been stopped for at least3
months.
0 = On, 1= Off
B = Vent Valve Command
4
0 = Close, 1 = Open
Valid only if in Par Buff, Offset-20, B
B = Purge Valve Command
3
0 = Close, 1 = Open
Valid only if Par Buff, Offset-20, B
B – Not used
2
B = Operating Mode
0-1
These bits define from which source the controller
has to get commands (readings are always
available). In order to operate the controller by
Profibus these bits must be set to 3.
0 = Remote I/O
1 = Serial
2 = Front panel
3 = Profibus
TwisTorr 74 FS AG Rack Controller User Manual / 87-901-055-01
WIN
Serial
000
001
100
122
=1
0
145
=1
0
008