Micromod Micro-DCI: 53MC5000 Multi-Loop Process Controller Manuel d'utilisateur télécharger pdf (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

1 2 ... 72 73 74 75 76 77 78 79 80 81 82 ... 200 201

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