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To report the value of the backfill limit, enter:
RBL
The Controller responds with the message [BLvalue], where:
value
is a percentage of the new setpoint, from 0 to 100%
Setting the Backfill Threshold Pressure Value
This value is the required difference between the new setpoint and the current pressure in the sy
stem before
the backfill control feature operates. Setpoint changes less than the backfill threshold value do not trigger the
backfill function. The entry is defined as a percentage of the full scale value for the high pressure transducer.
The messages described here change and report the threshold value.
The [MDvalue]
command sets the minimum delta pressure value, where:
value is a percentage of the high range pressure transducer full scale, from
0 to 100 %
The default is 5% of full scale of the high range transducer.
To report the minimum delta pressure value, enter:
RMD
The controller responds with the message [MD
value], where:
value
is a percentage of the high range pressure transducer full scale, 0 to 100%
Setting the Backfill Dela
y value (available in firmware 01.04.09 or newer)
The backfill delay
value sets the time from when the pressure reaches the backfill limit and pressure control
resumes.
BDx sets the backfill delay limit
RBD gets the backfill delay limit
Selecting the Active Channel
The standard, dual-channel device can operate in dual or single channel m
ode. In single chann
el mode, the
unit can be set to operate on the high or low range transducer. The controller is set to dual-channel mode at
the factory. The messages described here select and report the operating mode.
The [Lvalue] command selects the chan
nel(s) to use, where:
LA (Auto) = Dual channel operation
LH (High)
= CH1; high range sensor
(locks out low range sensor)
LL (Low) = CH2; low range sensor
(locks out high range sensor)
To report which channels(s) are active, enter:
R7
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