Micromod Micro-DCI: 53MC5000 Multi-Loop Process Controller FLEXIBLE CONTROL STRATEGIES - Manual (Page 76)

3.4 EXAMPLE 3 - HIGH/LOW SELECTOR WITH RE-TRANSMISSION
Under normal operation, the Setpoint Generator module is used to select an operating setpoint
from one of three sources: the setpoint track value, the remote setpoint, or the local setpoint push
buttons. As shown in Figure 3-3 below, this control strategy uses Setpoint Generator 0 to select
an output from signal values at ANI0 or ANI1. The ANI0 value follows the setpoint track path and
the ANI1 value follows the remote setpoint path. ANI0 and ANI1 may have different spans.
The Math A module provides an output to the Logic A module only if ANI0 is greater than ANI1.
The output of the Setpoint Generator 0 module can be either the ANI0 value (setpoint tracking) or
the ANI1 value (remote setpoint). This value is applied to the Math B module where it is aug-
mented by the correct span (C006 = ANI0 Span and C007 = ANI1 Span), which is selected by the
Logic B, Param C, and Param D module cluster.
Figure 3-3. High/Low Selector with Re-Transmission
Section 3. FCS Wirelist Examples
EX3
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