Warning Output Function - Mitsubishi Melsec-Q Series User Manual

3
SPECIFICATIONS
3.2.4

Warning output function

(1) Process alarm
(a) Warning occurrence
(b) Warning clearance
Temperature
Figure 3.8 Warning output occurence and clearance (Process alarm)
When the detected measured temperature value is higher than or equal to the
process alarm upper upper limit value or lower than or equal to the process alarm
lower lower limit value and falls in the warning output range, a warning occurs.
When a warning occurs, it is notified by storing "1" in the bit position
corresponding to the channel of the warning output flag (process alarm)(Un\G47),
and turning ON the warning output signal (XD) and the [ALM] LED.
After a warning occurrence, when the temperature value falls lower than the
process alarm upper lower limit value or rises higher than the process alarm lower
upper limit value and returns to within the setting range, the warning is cleared.
When the warning is cleared, "0" is stored in the bit position corresponding to the
channel of the warning output flag (process alarm)(Un\G47).
The warning output signal (XD) turns OFF and the "ALM" LED turns off only when
the process alarm and rate alarm warnings for all channels do not occur or are in
clearance state.
Warning
occurence
Upper upper
limit value
Upper lower
limit value
CH1 measured
temperature value
Lower upper
limit value
CH2 measured
temperature value
Lower lower
limit value
CH1 Process alarm upper
limit value (Un\G47,b0)
CH1 Process alarm lower
limit value (Un\G47,b1)
CH2 Process alarm upper
limit value (Un\G47,b2)
Warning output signal (XD)
Warning output range section
Out of warning output range section
Included
Warning
occurence
Warning clearance
Warning clearance
3.2 Function List
3.2.4 Warning output function
1
2
3
4
5
Warning
clearance
Warning
clearance
6
Time
7
8
3
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