Rockwell Automation 1771-CFM Config. Flowmeter Installation Instructions - Manual (Page 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 WordAssignments
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
ЙЙЙЙЙЙ
Й ЙЙЙЙ Й
ЙЙЙЙЙЙ
Header
ЙЙЙЙЙЙЙЙЙЙЙЙЙЙЙЙЙЙЙЙЙЙ
Й ЙЙЙЙЙЙЙЙЙЙЙЙЙЙЙЙЙЙЙЙ Й
ЙЙЙЙЙЙЙЙЙЙЙЙЙЙЙЙЙЙЙЙЙЙ
PowerĆup
bit
Output Status & Diagnostics
2 Output Status
ЙЙЙЙЙЙЙЙЙЙЙ
ЙЙЙЙЙЙЙЙЙЙЙ
Error Words & Diagnostics
Mode Indication
3 Channel 3 Channel 2 Channel 1 Channel 0
Channel 1 Status Channel 0 Status
4 ЙЙЙ
Й Й Й
ЙЙЙ
Prover Status
Overrange
Alarm
Overflow
Status
Overspeed
Alarm
Acceleration
Alarm
ЙЙ
ЙЙ
ЙЙ
Prover Status
Overrange
Alarm
Overflow
Status
Overspeed
Alarm
Acceleration
Alarm
Channel 3 Status Channel 2 Status
5
ЙЙЙ
ЙЙЙ
Prover Status
Overrange
Alarm
Overflow
Status
Overspeed
Alarm
Acceleration
Alarm
ЙЙ
ЙЙ
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 ofFull Scale (Rate % ofHigh 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 ofchange offrequency)
12, 21, 30, 39 ЙЙЙЙЙЙЙЙЙЙЙЙЙЙЙЙЙЙЙЙ
ЙЙЙЙЙЙЙЙЙЙЙЙЙЙЙЙЙЙЙЙ
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
ЙЙЙ
ЙЙЙ
* 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
andInput Data