Mitsubishi Electric MELSEC iQ-F FX5 User Manual page 449

■Input signal error detection signal (b12)
Set 'CH1 Input signal error detection setting' (Un\G528) to one of upper lower limit detection, upper limit detection, lower limit
detection, and simple disconnection detection, and turns on if the analog input value exceeds the setting range that is set in
'CH1 Input signal error detection lower limit setting value (Un\G529) or 'CH1 Input signal error detection upper limit setting
value' (Un\ G530) in the channel where the conversion has been enabled. For the cases where the simple disconnection
detection is set, 'CH1 Input signal error detection lower limit setting value' (Un\G529) or 'CH1 Input signal error detection
upper limit setting value' (Un\G530) is ignored and turns on at the disconnection detection.
When 'Input signal error detection signal' (Un\G69, b12) turns on, the following operations are performed.
• Digital output value and digital operation value of the relevant channel is held with the value just before the error was
detected.
• The ALM LED flashes.
Turning off 'Input signal error detection signal' (Un\G69, b12) differs depending on Input signal error/disconnection detection
auto-clear enable/disable setting.
Input signal error/
Disconnection detection
automatic clear enable/
disable setting
Enable (0)
Disable (1)
Averaging processing starts over after the conversion resumes.
■Conversion completed flag (b14)
Conversion completed flag (Un\G70, b15) turns on when the first conversion has been completed for all conversion enabled
channels. When reading a digital output value, use this signal or 'Conversion completed flag' (Un\G42) as an interlock.
■Error occurrence flag (b15)
Error flag (Un\G69, b15) turns on when an error has occurred.
'Latest error code' (Un\G0),
'Latest alarm code' (Un\G2)
'Error flag'
(Un\G69, b15)
'Error clear request'
(Un\G70, b15)
'Error flag' (Un\G69, b15), 'Latest error code' (Un\G0), and 'Latest alarm code' (Un\G2) are cleared at the timing when 'Error
clear request' (Un\G70, b15) turns offon.
Operations related to the turning off of input signal error detection signal (Un\G69, b12)
If the input signal is within the setting range, 'Input signal error detection signal' (Un\G69, b12) and 'Input signal error
detection flag' (Un\G40) automatically turn off, and ALM LED turns off.
Remove the cause of the input signal error and set the input signal within the setting range. Then turn the 'error clear
request' (Un\G70, b15) OFFONOFF. The input signal error detection signal '(Un\G69, b12) and the 'input signal error
detection flag' (Un\G40) will turn OFF, and the ALM LED will turn off. The latest alarm code will also be cleared.
Input signal error detection flag
'Input signal error detection signal'
(Un\G69, b12)
'Error clear request'
(Un\G70, b15)
Controlled by the multiple input module
Controlled by the program
0 Error or alarm
ON
OFF
OFF
Implement by multiple input module
Implement by program
Input signal error detection
0
ON
OFF
OFF
0
OFF
ON
OFF
0
OFF
ON
OFF
APPX
Appendix 12 Buffer Memory Areas
A
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