Mitsubishi Electric MELSEC iQ-R Series User Manual page 120

Alert output flag (Rate alarm) [Q compatible mode]
When the Q compatible mode function is used, the upper/lower limit alarm of the rate alarm can be checked.
b15 b14 b13 b12 b11 b10 b9
CH8 CH8 CH7 CH7 CH6
(1) 0: Normal, 1: Alarm ON
■Buffer memory address
The following shows the buffer memory address of this area.
Buffer memory name
Alert output flag (Rate alarm) (in Q compatible
mode)
■Alert output flag status
• When the value is out of the range specified in the rate alarm upper limit value or rate alarm lower limit value, Alarm ON (1)
is stored in Alert output flag (Rate alarm) corresponding to each channel.
• If an alert is detected even in one channel, of the channels where conversion is enabled and the alert output setting
(Process alarm) is enabled, 'Alert output signal' (XD) also turns on.
■Clearing Alert output flag
• As the variation in the temperature measured value returns to the setting range, the flag is automatically cleared.
• Turning on and off 'Operating condition setting request' (Y9) allows the flag to be cleared.
APPX
118
Appendix 3 Buffer Memory Areas
b8 b7 b6 b5 b4
CH6 CH5 CH5 CH4 CH4 CH3 CH3
(1)
CH1
48
b3 b2 b1 b0
CH2 CH2 CH1 CH1
CH2 CH3 CH4 CH5 CH6 CH7 CH8