Monitoring - Omron CQM1H series Operation Manual

Monitoring

5-6

Monitoring

Measurement Mode
Comparison Mode
196
8. Input the hysteresis set command code CA00.
The input word will be set to the response CA00.
C
C
2
SHIFT SHIFT
CHG
9. Set 0010 to the output word.
10. When the Unit correctly receives the command, the input word will be set to
0010.
A A B
1
0 0
CHG
11. After setting all the set values, set the output word to 0000 again. The scaled
conversion data 1254 will be set to the input word.
A A A
0 0 0
CHG
The input word data is used to monitor the present scaled conversion data or
comparison result. To monitor the present scaled conversion data or compari-
son result by using a ladder program, set the mode select switch on the Pro-
gramming Console to the OPERATION MODE and then retrieve the input word
data.
The input word in measurement mode will be a binary-coded scaled conversion
data. For example, when the factory-set scaling values are used, the input word
will be set to 270F for +9999 and D8F1 (2's complement) for –9999.
If the scaled conversion data falls beyond the ±9999 range or if the input value
falls in the overrange zone, B000 (overflow) will be set to the input word.
If the present scaled conversion data is indefinite, BBBB will be set to the input
word.
The input word has flags for comparison results, overrange detection, and sen-
sor disconnection detection as shown below.
Overrange
Sensor disconnection
A
A
A A
0 0 0
WRITE
c100 c001
CA00 CA00
c100 c001
A
0
WRITE
0010 0010
c100 c001
A
0
WRITE
0000 1254
Section 5-6