Agilent Technologies TwisTorr 74FS AG Rack Mode D'emploi page 252

17 Technical Information
How to Use by Front Panel
Where:
NORMAL: indicates the operating regime of the pump
XXXHz: is the driving frequency of the pump (for further details
please see the description "Pressing once" the Measures key)
The operating mode of the controller is shown at the bottom in
the center. This may be:
FRONT: front mode (the controller accepts START/STOP and
LOW SPEED commands from the front panel)
REMOTE: remote mode (the controller accepts START/STOP
and LOW SPEED commands via the rear connector)
RS 232: the controller accepts commands from the serial port
according to the RS 232 standard.
RS-485 [XX]: the controller accepts commands from the serial
port in RS-485 mode with address XX (XX from 0 to 31)
PROFIBUS [YYY]: the controller accepts commands from the
PROFIBUS port with address YYYY
Black rectangles as shown below may be displayed at any time
in the first and last box of the bottom line of the display
(opposite the AG / R1 / R2 captions). The meaning of these
rectangles is as follows:
AG → the Gauge is connected to the controller
R1 → relay (set point) R1 is active
R2 → relay (set point) R2 is active
Figure 30
252/300 TwisTorr 74 FS AG Rack Controller User Manual / 87-901-055-01