Mitsubishi Electric MELSEC iQ-F FX5 User Manual page 128

Warning output flag (Process alarm upper limit/lower limit) [FX3 allocation mode]
When the FX3 allocation mode function is used, the upper/lower limit alarm of the process alarm can be checked.
b15 b14 b13 b12 b11 b10 b9
0 0 0 0 0
(2)
(1) 0: Normal, 1: Alarm ON
(2) The values of b8 to b15 are fixed to 0.
■Buffer memory address
The following shows the buffer memory address of this area.
Buffer memory name
Warning output flag (Process alarm) (in FX3
allocation mode function)
■Alert output flag status
• When the value is equal to or exceeds the limit specified by the process alarm upper upper limit value or is equal to or falls
below the process alarm lower lower limit value, Alarm ON (1) is stored in Warning output flag (Process 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' (Un\G69, b8) also turns on.
■Clearing Alert output flag
• When the digital operation value returns within the setting range, 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 upper limit)
The upper limit alarm of the rate alarm can be checked for each channel.
b15 b14 b13 b12 b11 b10 b9
0 0 0 0 0
(1) 0: Normal, 1: Alarm ON
(2) The values of b4 to b15 are fixed to 0.
■Buffer memory address
The following shows the buffer memory address of this area.
Buffer memory name
Warning output flag (Rate alarm upper limit)
■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 change rate of the digital output value returns within the setting range, the flag is automatically cleared.
• Turning offonoff 'Operating condition setting request' (Un\G70, b9) allows the flag to be cleared.
APPX
126
Appendix 4 Buffer Memory Areas
b8 b7 b6 b5 b4
CH4 CH4 CH3 CH3
Upper Lower Upper Lower
0 0 0
limit limit limit limit
value value value value
CH1
26
b8 b7 b6 b5 b4
0 0 0 0 0 0 0
(2)
CH1
38
b3 b2 b1 b0
CH2 CH2 CH1 CH1
Upper Lower Upper Lower
limit limit limit limit
value value value value
(1)
CH2
b3 b2 b1 b0
CH4 CH3 CH2 CH1
(1)
CH2
CH3 CH4
CH3 CH4