Rockwell-automation 1771-CFM Config. Flowmeter Installation Instructio Manual de usuario descargar pdf (Pagina 15)

Configurable Flowmeter Module 15

Publication 1771ĆIN043B-EN-P - July 2002

Your PLC processor gets data from the CFM module using BTR

instructions in your ladder logic program. The CFM module

transfers up to 41 words to the PLC processor’s data table file.

The words contain module status and input data from each channel.

You should program a block transfer read length of zero (0). When a

BTR of 0 is programmed, the CFM module will determine the

correct number of words (41) to return.

BTR Word Assignments

Word(s)

Bit

Word(s)

15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 00

Block ID & Resets

1 Header

PowerĆup

bit

Output Status & Diagnostics

Output Status

Error Words & Diagnostics

Mode Indication

3 Channel 3 Channel 2 Channel 1 Channel 0

Channel 1 Status Channel 0 Status

Prover Status

Overrange

Alarm

Overflow

Status

Overspeed

Alarm

Acceleration

Alarm

Prover Status

Overrange

Alarm

Overflow

Status

Overspeed

Alarm

Acceleration

Alarm

Channel 3 Status Channel 2 Status

Prover Status

Overrange

Alarm

Overflow

Status

Overspeed

Alarm

Acceleration

Alarm

Prover Status

Overrange

Alarm

Overflow

Status

Overspeed

Alarm

Acceleration

Alarm

Input Channel Data

Channel 0 (words 6Ć14) Channel 1 (words 15Ć23) Channel 2 (words 24Ć32) Channel 3 (words 33Ć41)

6, 15, 24, 33 Percent of Full Scale (Rate % of High RPM value)

7, 16, 25, 34 Frequency (0Ć120 ) MSD

8, 17, 26, 35 Frequency (0Ć999) LSD

9, 18, 27, 36 Total MSD (0Ć999)

10, 19, 28, 37 Total LSD (0Ć9,999)

11, 20, 29, 38 Acceleration (rate of change of frequency)

12, 21, 30, 39 Direction

13, 22, 31, 40 Prover Total Count Value or Store Count Value Ċ MSD (0Ć999)

14, 23, 32, 41 Prover Total Count Value or Store Count Value Ċ LSD (0Ć9,999)

not used

* Numeric values are in binary except for Diagnostics (word 2, bits 00Ć07)*

For detailed BTR descriptions,

see chapter 5, (publication

1771Ć6.5.99).

Interpret Module Status

and Input Data

1 2 ... 10 11 12 13 14 15 16 17 18 19 20

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Rockwell-automation 1771-CFM Config. Flowmeter Installation Instructio Manual de usuario Pagina 15

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