Mitsubishi MELSEC Q Series User Manual page 49

3 SPECIFICATIONS
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Accordingly, set the input signal error detection setting value to "100 (10.0%)".
With this setting, the input signal error detection setting value works as show
below. (The setting "100 (10.0%)" allows an error to be detected at a level of
21.6mA as well as 2.4mA.)
(9) Setting up input signal error detection with customized values for the upper limit
value only, lower limit value only, or upper and lower limit values
The following settings allows input signal error detection with customized values
for the upper limit value only, lower limit value only, or upper and lower limit
values.
• Input signal error detection extended/input signal error detection/warning output
settings (buffer memory address 47: Un\G47)
• CH input signal error detection setting value/CH
lower limit setting value (buffer memory addresses 138 to 141: Un\G138 to
Un\G141)
• CH input signal error detection upper limit setting value (buffer memory
addresses 142 to 145: Un\G142 to Un\G145)
The following is an example of how to make the settings.
Ex.) To detect an input signal error if the analog input value falls below 2.4mA on
the channel with an input range of 4 to 20mA (Extended mode)
MELSEC-Q
input signal error detection
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