Micromod Micro-DCI: 53MC5000 Multi-Loop Process Controller FLEXIBLE CONTROL STRATEGIES - Manual (Page 77)

If ANI0 is greater than or equal to ANI1, the following event sequence occurs as described in Table
3-5:
Table 3-5. High/Low Selector - ANI0
≥
ANI1
Step Module Input(s) Output(s) Comments
1 ANI ANI0 (C020) and
ANI1 (C021).
2 Math A ANI0 (B123) and
ANI1 (B124). L098 = 1 (True compare, ANI0 >
ANI1).
3 Logic A B127 = 1 and
B128 = 1. L097 = 0. FC = 128 or A NOT;
therefore, two 1’s in =
a 0 out.
4 SP Gen 0 B149 = 0, which
enables setpoint
tracking (the 0 input is
inverted to a 1 within
the SP Gen 0 module
for setpoint tracking).
B148 = ANI0 value
(from step 1 output)
B150 = ANI1 value
(from step 1 output)
B151 is tied to a
steady 1 from L071,
which enables remote
setpoint. C101 = ANI0
L104 = 1 to indicate
setpoint tracking is
selected. Both setpoint tracking
and remote setpoint
are enabled, but the
selection priority in the
SP Gen 0 module is
always setpoint
tracking, remote
setpoint and the local
setpoint push buttons
last; therefore, setpoint
tracking (ANI0) is
selected.
5 Logic B B130 = 1 and
B131 = 1. L096 = 0, which
inhibits B142 of Param
D (ANI1 span). FC = 128 or A NOT;
therefore, two 1’s in =
a 0 out.
6 Param C B139 = L104 (1 from
step 4 output).
B140 = ANI0 span
value from datapoint
C006. B141 = ANI0 span
value. The ANI0 span value
is gated through the
Param C module to
datapoint C005.
7 Param D B142 = L096 (0 from
step 5 output), which
inhibits Param D
output.
8 Datapoint
C005 C005 = B141 (from
step 6 output). ANI0 span value.
9 Math B B162 = C101 (ANI0
value from step 4 SP
Gen 0 output ).
B163 = ANI0 span
value from C005. C031 = ANI0 value
augmented by the
Math B function code 4
algorithm.
10 ANO’s B100 = C031, which is
the augmented ANI0
value. ANO0 = B100 =
augmented ANI0 value.
FCS 53MC5000 Flexible Control Strategies
3-12
EX3