P
AGE
43
Process Re-transmission Output - EA Option Only
If the instrument is provided with a current output not used for process control, this output may
be assigned to provide a linear re-transmission of the process value. This output can be used
to provide a process signal to remotely installed recorders, panel meters, or data loggers.
The process output is scaled for the application by using the Program mode parameters
process/setpoint output value upper Pou and process/setpoint output value lower PoL. The
current output resolution is @ 200 steps, so for the best re-transmission accuracy, the span
between Pou and PoL should be as small as possible. If a current output is used for re-
transmission, the corresponding control output, out1 or out2, cannot be assigned to it.
The example illustrated in Figure 4-4 (below) shows a process re-transmission application for
0 to 200 degrees F.
FIGURE 4-4
Setpoint Re-transmission Output - EA Option only
If the instrument is provided with a current output not used for process control, this output may
be assigned to provide a linear re-transmission of the setpoint value. The setpoint output is
scaled for the application by using the Program mode parameters process/setpoint output
value upper Pou and process/setpoint output value lower PoL. The current output resolution
is @ 200 steps, so for the best re-transmisstion accuracy, the span between Pou and PoL
should be as small as possible. If a current output is used for re-transmission, the corre-
sponding control output, out1 or out2, cannot be assigned to it.
The example illustrated in Figure 4-5 (below) shows a setpoint re-transmission application for
0 to 400 degrees F.
FIGURE 4-5
PROCESS OUTPUT / RETRANSMISSION VALUES
EXAMPLE
INPUT
OUTPUT
0%
100 %
0
°
F
200
°
F
SETPOINT OUTPUT / RETRANSMISSION
VALUES
EXAMPLE
SETPOINT
OUTPUT
0%
100 %
0
°
F
400
°
F
