Micromod Micro-DCI: 53MC5000 Multi-Loop Process Controller Instrukcja Użytkownika Pobierz pdf (Strona 36)

2.7.20 EXTENDED MATH B

The Extended Math B (Emath B) module executes a selected function on three input variables A,

B, and C. The function to be executed by Emath B is selected by entering a function code (FC)from

the table below into datapoint B176. Numeric values for parameter constants K1 through K12 can

also be entered into their respective datapoints, which may affect the output as determined by the

function code selected. The output can be a numeric (C033) and/or a logic (L092) value.

The tables that follow list the function codes, input variables, and parameters. An illustration of the

Emath module follows the tables. Complex function codes 15-19, which are listed in the table, are

described in Sections 2.7.20.1 through 2.7.20.3.

Extended Math Functions

FC C OUTPUT L OUTPUT FC C OUTPUT L OUTPUT

0 A No change 15 Piecewise characterizer No change

1(K1

A) + K2 No change 16 3rd order polynomial No change

2(K1

A) + (K2

B) + (K3

C) No change 17 11th order polynomial No change

3(K1

C) + K2 No change 18 Linear flow compensation No change

4(K1

B]) + (K2

C) No change 19 Square root flow

compensation

No change

5([K1

A] + [K2

C) + K3 No change 20 Limit to constant

(K1 < A < K2)

1 if A

≥

K2 or K1

≥

6([K1

C) + K2 No change 0 otherwise

7([K1 + A]

[K2 + B])

K3 No change 21 Limit to variable

(K1

C < A < K2

1 if A

≥

B or K1

≥

8(K1

abs[A]) + K2 No change 0 otherwise

9K1

([K2

B] + K3)

No change 22 Compare to constant 1 if A

≥

10 K1

([K2

A] + K3)

No change 0 if A < K1 - K2

11 K1

log([K2

A] + K3) No change 23 Compare to variable 1 if A

≥

(K1

B) + K2

FC + 128 yields square root of C output

0 if A < (K1

B) + K2 - K3

Inputs Inputs

WIRELIST SYMBOL DATA

TYPE

ASSIGNED VALUE WIRELIST SYMBOL DATA

TYPE

ASSIGNED VALUE

B173 A C B175 C C

B174 B C B176 FC N/A

OUTPUT DATAPOINTS:

C033, L092

Parameters Parameters

SYMBOL DATAPOINT ASSIGNED VALUE SYMBOL DATAPOINT ASSIGNED VALUE

K1 C366 K7 C372

K2 C367 K8 C373

K3 C368 K9 C374

K4 C369 K10 C375

K5 C370 K11 C376

K6 C371 K12 C377

Section 2. FCS Modules

EMATH-B

2-29

1 2 ... 31 32 33 34 35 36 37 38 39 40 41 ... 200 201

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