Mitsubishi MELSEC iQ-F, User Manual

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124
APPX
Appendix 4 Buffer Memory Areas
Warning output flag (Rate alarm upper limit)
The upper limit alarm of the rate alarm can be checked for each channel.
■
Buffer memory address
The following shows the buffer memory address of this area.
■ Alert output flag status
• If the limit specified in the rate alarm upper limit value is equal to or exceeded, Alarm ON (1) is stored in 'Alert output flag
(Rate alarm upper limit)' (Un\G38) of the corresponding channel.
• If an alert is detected even in one channel, of the channels where conversion is enabled and the alert output setting (Rate
alarm) is enabled, 'Alert output signal' (Un\G69, b8) also turns on.
■
Clearing Alert output flag
• When the digital output value becomes smaller than the rate alarm upper limit value, the flag is automatically cleared.
• Turning off
→
on
→
off 'Operating condition setting request' (Un\G70, b9) allows the flag to be cleared.
Warning output flag (Rate alarm lower limit)
The lower limit alarm of the rate alarm can be checked for each channel.
■
Buffer memory address
The following shows the buffer memory address of this area.
■
Alert output flag status
• When the value becomes equal to or smaller than the range specified in the rate alarm lower limit value, Alarm ON (1) is
stored in 'Alert output flag (Rate alarm lower limit)' (Un\G39) 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 (Rate
alarm) is enabled, 'Alert output signal' (Un\G69, b8) also turns on.
■
Clearing Alert output flag
• When the digital output value becomes smaller than the rate alarm lower limit value, the flag is automatically cleared.
• Turning off
→
on
→
off 'Operating condition setting request' (Un\G70, b9) allows the flag to be cleared.
(1) 0: Normal, 1: Alarm ON
(2) The values of b8 to b15 are fixed to 0.
Buffer memory name CH1 CH2 CH3 CH4 CH5 CH6 CH7 CH8
Warning output flag (Rate alarm upper limit) 38
(1) 0: Normal, 1: Alarm ON
(2) The values of b8 to b15 are fixed to 0.
Buffer memory name CH1 CH2 CH3 CH4 CH5 CH6 CH7 CH8
Warning output flag (Rate alarm lower limit) 39
0 0 0 0 0 0 0 0 CH1 CH2 CH3 CH4 CH5 CH6 CH7 CH8
b15 b14 b13 b12 b11 b10 b9 b8 b7 b6 b5 b0 b1 b2 b3 b4
(1) (2)
0 0 0 0 0 0 0 0 CH1 CH2 CH3 CH4 CH5 CH6 CH7 CH8
b15 b14 b13 b12 b11 b10 b9 b8 b7 b6 b5 b0 b1 b2 b3 b4
(1) (2)