Mitsubishi Electric MELSEC iQ-R User Manual page 50

■Operations of when an input signal error has occurred
When an input signal error has occurred, even if 'CH1 Difference conversion trigger' (Un\G470) changes from No request (0)
to Trigger request (1), the difference conversion does not start, and 'CH1 Difference conversion status flag' (Un\G408) and
'CH1 Difference conversion reference value' (Un\G432) are not updated. After the value in the input signal error range returns
to the normal value, change 'CH1 Difference conversion trigger' (Un\G470) from No request (0) to Trigger request (1) again. If
an input signal error has occurred in the status of Trigger request (1), the difference conversion starts at the timing when the
error value returns to the normal value, treating the digital operation value at that timing as the difference conversion
reference value.
Analog input value (mA)
'Input signal error detection
flag' (Un\G40)
'Input signal error detection
signal' (XC)
'CH1 Difference conversion
trigger' (Un\G470)
'CH1 Difference conversion
reference value' (Un\G432)
'CH1 Difference conversion
status flag' (Un\G408)
(A) Timing when the error value returns to the normal value
1 FUNCTIONS
48
1.9 Difference Conversion Function
4
CH1 Analog input value
2.2
2
0
ON
OFF
OFF
No request (0)
0
Not converted (0)
An input signal error
is occurring.
ON
Trigger request
(1)
Digital value corresponding
to 2.2mA
Converting difference (1)
Detection range
Out of detection range
Included
Time
(A)