Mitsubishi MELSEC iQ-F, Руководство пользователя

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130
APPX
Appendix 4 Buffer Memory Areas
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Warning output signal (b8)
Alert output signal (Un\G69, b8) turns on when the process alarm or rate alarm has been detected. When the alert output
function (process alarm/rate alarm) is disabled for all channels, 'Alert output signal' (Un\G69, b8) is always off.
■
Operating condition setting completed flag (b9)
When changing values of the buffer memory, use as an interlock condition to turn off → on → off 'Operating condition setting
request' (Un\G70, b9).
For the buffer memory areas which require turning off
→ on → off of 'Operating condition setting request' (Un\G70, b9) to enable
the changed values, refer to the following.

Page 108 Buffer Memory Areas
When 'Operating condition setting completed flag' (Un\G69, b9) is off, the conversion is not performed.
When 'Operating condition setting request' (Un\G70, b9) is on, 'Operating condition setting completed flag' (Un\G69, b9) turns
off.
Alarm Operation
Process alarm • Process alarm turns on when ‘CH1 Digital operation value’ exceeds the range set for 'CH1 Process alarm upper upper limit
value' (Un\G514) or 'CH1 Process alarm lower lower limit value' (Un\G520). The ALM LED also turns on along with the on of
the signal. The target of alert output is the channels only where the alert output function (process alarm) and the conversion
are both enabled.
• Process alarm turns off when ‘CH1 Digital output value’ falls within the setting range for all the channels where the
conversion is enabled. The ALM LED also turns off along with the off of the signal.
Rate alarm • Rate alarm turns on when the change rate of ‘CH1 Digital output value’ exceeds the range set for 'CH1 Rate alarm upper
limit value' (Un\G524) and 'CH1 Rate alarm lower limit value' (Un\G526). The ALM LED also turns on along with the on of the
signal. The target of alert output is the channels only where the alert output function (rate alarm) and the conversion are both
enabled.
• Rate alarm turns off when the change rate of ‘CH1 Digital output value’ falls within the setting range for all the channels
where the conversion is enabled. The ALM LED also turns off.
OFF OFF
ON
Implement by multiple input module
Alarm occurs 0 0
Warning output flag (Process alarm upper limit)
Warning output flag (Process alarm lower limit)
Warning output flag (Rate alarm upper limit)
Warning output flag (Rate alarm lower limit)
‘Warning output signal’
(Un\G69, b8)
OFF
OFF
ON ON
ON
ON
ON
ON
OFF
(Un\G69, b14)
'Module READY'
'Operating condition setting
completed flag'
'Operating condition setting
request'
'Conversion completed flag'
Controlled by the multiple input module
Controlled by the program
(Un\G69, b0)
(Un\G69, b9)
(Un\G70, b9)