27
SUE 1
SUT 0.05
SUF 0.01
Setpoint Messages
The Setpoint messages define the setpoint parameters which include the setpoint values, the gains and phases,
and two process limit relays (each with high and low trip point levels).
All of the setpoint messages (except for the gain and phase parameters) function in the same way, regardless
of your system’s configuration. The way your unit responds to the gain or phase messages depends on the
type of pressure control (PID) and setpoint control (pressure or position) chosen. For example:
When you are using PID control with pressure setpoints, you can adjust both the gain and phase values.
The unit accepts and responds to both commands and queries.
If you are using position setpoint control, there are no gain or phase parameters. The unit will not accept
or respond to these queries or commands.
Table 8: Setpoint Messages
Description Command
Request
Response
Setpoint Control
T x value
x:
1 = Setpoint A
2 = Setpoint B
3 = Setpoint C
4 = Setpoint D
5 = Setpoint E
6 = Analog Setpoint
value:
0 = Position
1 = Pressure*
R xx
xx:
25 = Analog Setpoint
26 = Setpoint A
27 = Setpoint B
28 = Setpoint C
29 = Setpoint D
30 = Setpoint E
T x
value
x
:
0 = Analog Setpoint
1 = Setpoint A
2 = Setpoint B
3 = Setpoint C
4 = Setpoint D
5 = Setpoint E
value
: 0 = Position
1 = Pressure
Analog Setpoint
Range
A value
value:
0 = -5 to +5 V
1 = -10 to +10V*
R 24
A
value
value
: 0 = -5 to +5 V
1 = -10 to +10 V
Setpoint Values
S x value
x:
1 = Setpoint A
2 = Setpoint B
3 = Setpoint C
4 = Setpoint D
5 = Setpoint E
6 = Analog Setpoint
value:
Setpoints A to E =
% FS pressure or
% open
Analog setpoint =
0 = 100% of controlling
transducer’s range
1 = 10% of controlling
transducer’s range
R x
x:
0 = Analog Set Pt
1 = Setpoint A
2 = Setpoint B
3 = Setpoint C
4 = Setpoint D
10 = Setpoint E
S
x value
x
:
0 = Analog Set Pt
1 = Setpoint A
2 = Setpoint B
3 = Setpoint C
4 = Setpoint D
5 = Setpoint E
value
:
Setpoints
A
to
E
:
% FS pressure or
% open
Analog
setpoint
:
% of the analog setpoint
FS voltage range
