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Learn to use PI SMT (System Manager Tools) 3 to easily create a performance equation tag.

 

•  D I E .

•  L I E .

 

After a production meeting, it has been decided to manipulate raw data coming frommeasurement instruments through calculation. The results will be stored on the PI server, so

the same results will be available to everyone. As you are the PI expert, you have been

assigned the responsibility to create the calculations on the PI server.

 

There are four raw data tags that must be manipulated. They are listed below.

D E.

CD158 B D C F32

CDM158 D

CDE158 M K I32

BA:HAE.1 B F32

The CDT158 tag must be calculated to show an average of the value every 5 minutes. The

BA:PHASE.1 and CDM158 must be combined to show their value concatenated. Finally, the

CDEP158 and CDT158 tags must be used to calculate volume of ethylene produced every

hour.

To achieve your goal you will create 3 tags which will contain the results of these

calculations. Create these tags following the parameters given in the tables below.

M M F (I A)

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G CD158.

G D A CD158 2 D

G E D C E

G F32

G C

E E tagavg('CDT158', '*-2m', '*')  ED

2 2 L4

A 0

A 150

A 50

A C (1) C

A E D 0 E

A C D 0 C

M M F (I A)

G BA:A.1

G D D

G

G C

E E concat(digtext('CDM158'), text("

"), 'BA:PHASE.1') 

ED

E BA:HAE.1

ED.

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:

L3

M M F (I A)

G BA:E

G D D

G E 3 E

G F32

G C

E E 'CDEP158' * 8.314472 * ('CDT158'

+ 273.15) /

(28.05 * 200) 

ED

1 1 L4

A 0

A 300

A 50

A E D 0.1 E

A C D 0.2 C

*E: I G L = /M ,

, , , M

. K 273.15 C. 

Also, the PI performance Equation Scheduler startup file will be inspected at the start to

determine which scan classes to use for the 2 minute and 1 minute frequency required by the

exercise.

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I.

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1. 

G I . . .

2. 

L ( ):

•  /=00:01:00,00:00:00

•  /=00:02:00,00:00:00

•  /=00:00:30,00:00:00

. :

The first frequency is the first item in the list, so /f=00:01:00,00:00:00; the second frequency

is the second item, so /f=00:02:00,00:00:00; the third one is the third item, so

 /f=00:00:30,00:00:00.

3. 

.

. C

4. 

I M

5. 

C I C

(IEE)

6. 

C E

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1. 

7. 

F .

E E .

.

E .

2. 

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M M F (I A)

G CD158.

G D A CD158 2 D

G E D C E

G F32

G C

E E tagavg('CDT158', '*-2m', '*')  ED

2 2 L4

A 0

A 150

A 50

A C (1) C

A E D 0 E

A C D 0 C

3. 

8. 

C I .

M M F (I A)

G BA:A.1

G D D

G

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G C

E E concat(digtext('CDM158'), text("

"), 'BA:PHASE.1') 

ED

E BA:HAE.1

ED.

:

L3

4. 

9. 

C I .

M M F (I A)

G BA:E

G D D

G E 3 E

G F32

G C

E E 'CDEP158158' * 8.314472 *

('CDT158' + 273.15) /

(28.05 * 200) 

ED

1 1 L4

A 0

A 300

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A 50

A E D 0.1 E

A C D 0.2 C

*E: I G L = /M ,

, , , M

. 

5. 

10. 

C I .

11. 

C D A E

. I 2 .

12. 

C .

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6. 

13. 

F . 

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14.  , . 

15.  10 13 .

I

CD158., BA:A.1 BA:E.

M.