Agilent Technologies TwisTorr 305 FS User Manual page 114

8 Technical Information
Programmable Analog Output Diagrams
When in programmable analog signal you read a voltage below the voltage
range (in above table) it means "Error Over range", if you read a voltage
below the voltage range it means "Error Under range" (in these cases you
can read the manual of the gauge for further details).
With the serial communication you can use the following windows:
Win 224
Win 257
Win 267
The windows from 136 to 140 manage an additional set point (set point 3)
dedicated to turn ON or OFF the gauge (win 267=4)
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Pressure reading with the format X.X E XX
Gauge status (read only):
0 → when a gauge is not connected
1 → when a gauge is connected
2 → when the pressure read is under range or
3 → when the pressure read is under range or
4 → when the "identification" is present but
Gauge power (read/write):
If you need to turn off the gauge at certain
condition you can use this window
0 → gauge off
1 → gauge on (default)
2 → gauge normally off. It turns on when the
set point 1 is activated. If the set point 1 type
(win 101) is selected as "pressure" the gauge
is always on.
3 → gauge normally off. It turns on when the
set point 1 is activated. If the set point 2 type
(win 171) is selected as "pressure" the gauge
is always on.
4 → gauge normally off. It turns on when the
set point 1 is activated. If the set point 3 type
(win 101) is selected as "pressure" the gauge
is always on.
TwisTorr 305 FS Remote Controller User Manual / 87-901-059-01
when the gauge gives an internal error
when the gauge gives an internal error
not known by the controller