Mitsubishi Electric MELSEC iQ-F FX5 User Manual page 474

■Enabling the setting
Turn offonoff 'Operating condition setting request' (Un\G70, b9) to enable the setting.
■Default value
The default value is Disable (0).
CH1 Input signal error detection lower limit setting value
Set a lower limit value to detect an error for the input analog value.
For details on the input signal error detection function, refer to the following.
Page 361 Input signal error detection function
■Buffer memory address
The following shows the buffer memory address of this area.
Buffer memory name
CH Input signal error detection lower limit setting value
CH Input signal error detection lower limit setting value (In
FX2N allocation mode function)
■Setting range
The possible setting range is from 0 to 250 (0 to 25.0%). (Set it in a unit of 0.1%)
If a value other than the above is set, an input signal error detection setting range error (error code: 1C1H) occurs.
When the 'CH1 Input type/range setting' (Un\G598) is set to resistance temperature detector or thermocouple, the setting of
'CH1 Input signal error detection lower limit setting value' (Un\G529) is ignored.
The input signal error detection lower limit value is calculated by using 'Input signal error detection lower limit setting value'
(Un\G529) as follows. The input signal error detection lower limit value to be calculated varies depending on the input range
used.
Input signal error detection lower limit value = Lower limit value of each range - (Gain value of each range - Offset value of
each range)  (Input signal error detection lower limit setting value/1000)
Ex.
When 'CH1 Input signal error detection lower limit setting value' (Un\G529) is set to 100 (10%)
Range used: 4 to 20 mA
The input signal error detection lower limit value is calculated as follows:
Input signal error detection lower limit value = 4 - (20 - 4) ×
Detection conditions vary depending on the setting of 'CH1 Input signal error detection setting' (Un\G528) as follows:
• When 'CH1 Input signal error detection setting' (Un\G528) is set to Upper and lower limit detection (1), the detection is
performed with both the input signal error detection upper limit value and the input signal error detection lower limit value.
• When 'CH1 Input signal error detection setting' (Un\G528) is set to Lower limit detection (2), the detection is performed only
with the input signal error detection lower limit value.
• When 'CH1 Input signal error detection setting' (Un\G528) is set to Upper limit detection (3), the value set in this area is
ignored.
• When 'CH1 Input signal error detection setting' (Un\G528) is set to Simple disconnection detection (4), the value set in this
area is ignored.
■Enabling the setting
Turn offonoff 'Operating condition setting request' (Un\G70, b9) to enable the setting.
■Default value
The default value is set to 50.
APPX
472
Appendix 12 Buffer Memory Areas
CH1 CH2 CH3
529 729 929
1161 1162 1163
100
= 2.4 mA
1000
CH4 CH5 CH6
1129 1329 1529
1164 1165 1166
CH7 CH8
1729 1929
1167 1168