Input Signal Error Detection Function - Mitsubishi MELSEC iQ-F User Manual

4.9

Input Signal Error Detection Function

Outputs an alarm when an analog input value exceeds the preset range.
Analog input value
Input signal error detection
upper limit value
Input signal error detection
lower limit value
'CH1 Input signal error detection flag'
(Un\G40, b0)
'CH2 Input signal error detection flag'
(Un\G40, b1)
'Input signal error detection signal'
(Un\G69, b12)
'Error clear request' (Un\G70, b15)
Errors can also be cleared with the input signal error detection auto clear enable/disable setting. Refer to the
following sections for details.
Page 49 Clearing input signal errors
4 FUNCTIONS
46
4.9 Input Signal Error Detection Function
CH2 Analog
input value
CH1 Analog
input value
Error
detection
ON
OFF
OFF
ON
OFF
Controlled by the multiple input module
Controlled by the program
Normal
input value
Error
detection
ON
ON
Detection range
Out of detection range
Included
Time (t)
OFF
OFF
OFF
OFF