Warning Output Flag (Buffer Memory Address 48 :Un\G48) - Mitsubishi MELSEC Q Series User Manual

3 SPECIFICATIONS

3.4.13 Warning output flag (buffer memory address 48 :Un\G48)

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(1) If the digital output value or its varying rate falls outside the setting range set to
the CH process alarm upper/lower limit value (buffer memory addresses 86 to
117: Un\G86 to Un\G117) or CH
memory addresses 122 to 137: Un\G122 to Un\G137), the warning output flag
for the corresponding channel turns to 1.
(2) For both the process alarm and rate alarm, whether the warning is for the upper
or lower limit value can be checked on a channel basis.
(3) When the digital output value or its varying rate returns to within the setting
range, the warning output flag is automatically reset.
(4) If the warning is detected on any one of the channels enabled for A/D conversion
and enabled for process alarm or rate alarm warning output, the Warning output
signal (X8) also turns ON.
(5) When the operating condition setting request (Y9) is turned ON, the warning
output flag is cleared.
b15 b14 b13 b12 b11 b10
CH4 CH4 CH3 CH3
Lower Upper Lower
limit limit limit
value value value
rate alarm upper/lower limit value (buffer
b9 b8
CH2 CH2 CH1 CH1
Upper Lower Upper Lower Upper
limit limit limit limit limit
value value value value value
Rate alarm
For Q62AD-DGH, information of b4 to b7 and b12 to b15 is fixed at 0.
MELSEC-Q
b7 b6 b5 b4 b3
CH4 CH4 CH3 CH3 CH2 CH2 CH1 CH1
Lower Upper Lower Upper Lower
limit limit limit limit limit
value value value value value
Process alarm
0: Normal, 1: Alarm ON
b2 b1 b0
Upper Lower Upper
limit limit limit
value value value
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