What's next – Rockwell Automation 1771-CFM,D17716.5.99 CONFIGURABLE FLOWMET User Manual
Page 56
5–6
Interpret Module Status and Input Data
Publication 1771Ć6.5.99 - December 1995
Example Ċ reading data from the CFM module
In this example, the CFM module:
•
has a constant input frequency of 729Hz fed to all channels
•
has input channels configured as follows:
CH 0
CH 1
CH 2 & 3
Operating Mode
Totalizer
Nonresettable Totalizer
HighĆresolution Frequency
Minimum Frequency Sampling Time
50ms
250ms
10ms
Highest Allowable Frequency
25000
10000
50000
Acceleration Alarm Value
3500
Acceleration Calculation Time
10 (every 10 frequency samples)
Rollover Value
360000
Frequency Scaler
Multiplier
Divisor
6
36
Frequency in 10ths
0.1Hz
Bandwidth Limit
1/sample time
Sampling Termination
time or 200 counts
The following data table is a printout from the PLCĆ5 processor program example (page 3-4). This printout shows the BTW words
(1Ć60) and BTR words (101Ć141), in binary, used to communicate with the CFM module.
1771ĆCFM Sample PLCĆ5 Program
24 May 1993 Page 1
Data Table Report
PLCĆ5/20
File CFMSAMPL
Data Table File N22:0
Address
0
1
2
3
4
5
6
7
8
9
N22:0
0
8192
0
0
801
10
50
0
25000
3500
N22:10
1572
0
0
36
0
0
250
0
10000
0
N22:20
0
0
0
0
0
-4096
10
200
12500
0
N22:30
0
0
0
0
0
0
0
0
0
0
N22:40
0
0
0
0
0
0
0
0
0
0
N22:50
0
0
0
0
0
0
0
0
0
0
N22:60
0
0
0
0
0
0
0
0
0
0
N22:70
0
0
0
0
0
0
0
0
0
0
N22:80
0
0
0
0
0
0
0
0
0
0
N22:90
0
0
0
0
0
0
0
0
0
0
N22:100
0
8192
0
801
4
0
969
0
123
26
N22:110
2789
0
0
0
0
2392
0
730
62
2853
N22:120
0
0
0
0
477
0
7289
0
0
0
N22:130
0
0
0
0
0
0
0
0
0
0
N22:140
0
0
0
0
0
0
0
0
0
0
Troubleshoot
the CFM Module
6
What's Next