14
Table 6: RS-232 Setup Messages (continued)
Description Command
Request
Response
Backfill Limit
Blvalue RBL
Bl
value
BL95.0*
value
:
pressure at which the
feature turns off, in % of active
setpoint
Backfill Threshold
Pressure
MDvalue
value:
minimum difference
between the new setpoint
and the system pressure
required to turn on the
backfill feature (entered as a
% of the high range pressure
transducer full scale)
RMD
MD+
value
value
: minimum pressure
difference required to turn on the
backfill feature (reported as a % of
the high range pressure transducer
full scale)
Select Active Channel
LA (Auto)
= Dual channel*
LH (High)
= CH1
LL (Low)
= CH2
R7
Refer to parameter “
w
” in the
Operational Status Word (see
Table 9, page 37).
Learn the System
L
Learns the system pump
speed
None
None
Set Auto Channel
Crossover Delay
LDxxx
xxx
= msec (100*)
RD
LD
value
Set High Channel
Crossover Point
LHCxxx
xxx
= 0 to 100% of High
(0 to 104.999 if firmware
01.04 or newer)
default = 0.9
RHC
LHC
value
Set Low Channel
Crossover Point
LLCxxx
xxx
= 0 to 100% low
(0 to 104.999 if firmware
01.04 or newer)
default = 100
RLC
LLC
value
Set Valve Safe State
SS value
value:
0 = Valve open
1 = Valve close
2 = Hold position
3 = safe
4 = Cycle
RSS
SS
value
value
: 0 = Valve open
1 = Valve close
2 = Hold position
3 = safe
4 = Cycle
* Initial setting
= Indicates a factory only setting.
(continued on the next page)
