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Table 3-6. high/low selector - ani0 < ani1 – Micromod Micro-DCI: 53MC5000 Multi-Loop Process Controller FLEXIBLE CONTROL STRATEGIES User Manual

Page 78

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If ANI0 is less than ANI1, the following event sequence occurs as described in Table 3-6:

Table 3-6. 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 = 0

(False compare, ANI0
< ANI1).

3

Logic A

B127 = 1 and
B128 = 1.

L097 = 1.

FC = 128 or A NOT;
therefore, two 0’s in =
a 1 out.

4

SP Gen 0

B149 = 1, which
inhibits setpoint
tracking (the 1 input is
inverted to a 0 within
the SP Gen 0 module).
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 = ANI1
L104 = 0 to indicate
setpoint tracking is not
selected.

Remote setpoint is
enabled.

5

Logic B

B130 = 0 and
B131 = 0.

L096 = 1, which
inhibits B142 of Param
D (ANI1 span).

FC = 128 or A NOT;
therefore, two 0’s in =
a 1 out.

6

Param C

B139 = L104 (0 from
step 4 output), whic
inhibits Param C
output.

7

Param D

B142 = L096 (1 from
step 5 output), which
enables Param D
output.

B144 = ANI1 span
value.

The ANI1 span value
is gated through the
Param D module to
datapoint C005.

8

Datapoint
C005

C005 = B144 (from
step 6 output).

ANI1 span value.

9

Math B

B162 = C101 (ANI1
value from step 4 SP
Gen 0 output ).
B163 = ANI1 span
value from C005.

C031 = ANI1 value
augmented by the
Math B function code 4
algorithm.

10

ANO’s

B100 = C031, which is
the augmented ANI1
value.

ANO0 = B100 =
augmented ANI1 value.

Section 3. FCS Wirelist Examples

EX3

3-13