Mitsubishi Electric Melsec iQ-R Series User Manual page 123

CH1 Input signal error detection setting value
Set a setting value to detect an error for the input analog value.
For details on the input signal error detection function, refer to the following.
Page 40 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 setting value
■Setting range
The setting range is from 0 to 250 (0 to 25.0%). Set it in increments of 1 (0.1%).
In the channel where a value out of the range is set, an input signal error detection setting value range error (error code:
1C1H) occurs.
■How to calculate the input signal error detection value
The input signal error detection value is calculated based on the input signal error detection setting value as follows. The input
signal error detection value to be calculated varies depending on the input range used.
• Input signal error detection upper limit value = Gain value of each range + (Gain value of each range - Offset value of each
range)  (Input signal error detection setting value/1000)
• 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 setting value/1000)
Ex.
When 'CH1 Input signal error detection setting value' (Un\G529) is set to 100 (10%) with the input range of 4 to 20mA, the
input signal error detection upper/lower limit values are calculated as follows:
• Input signal error detection upper limit value = 20 + (20 - 4)  (100/1000) = 21.6mA
• Input signal error detection lower limit value = 4 - (20 - 4)  (100/1000) = 2.4mA
■Detection condition
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 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 detection is performed only
with the input signal error detection upper limit value.
• 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 on and off 'Operating condition setting request' (Y9).
■Default value
The default value is 50 for all channels.
CH1 CH2 CH3 CH4
529 729 929 1129
CH5 CH6 CH7 CH8
1329 1529 1729 1929
APPX
Appendix 3 Buffer Memory Areas
A
121