Input Signal Error Detection Extension Function - Mitsubishi L Series User Manual

8.8

Input Signal Error Detection Extension Function

Using this function, the detection method of the input signal error detection function can be extended. Use this function
to detect an input signal error only at the lower or upper limit, or to execute the disconnection detection. To enable this
function, the input signal error detection function does not need to be enabled.
(1) Detection method
As well as the input signal error detection function, an error can be detected with input signal error detection
upper limit value and input signal error detection lower limit value.
For details on the setting procedure of input signal error detection upper limit value and input signal error
detection lower limit value, refer to the following.
• Input signal error detection function (
The detection method can be selected from the following list:
Detection
method
An error is detected above the input signal error detection
Lower upper limit
upper limit value or below the input signal error detection
detection
lower limit value.
Lower limit An error is detected below the input signal error detection
detection lower limit value.
Upper limit An error is detected above the input signal error detection
detection upper limit value.
Disconnection detection is performed. For details, refer to the following.
Disconnection
detection
• Disconnection detection (
74
Page 69, Section 8.7)
Detection condition
Input signal error
detection upper
limit value
Input signal error
detection lower
limit value
Input signal error
detection upper
limit value
Input signal error
detection lower
limit value
Input signal error
detection upper
limit value
Input signal error
detection lower
limit value
Page 75, Section 8.8 (1)(a))
Analog
input value
Error
detection
Error
detection
Analog
input value
No error
detection
Error
detection
Analog
input value
Error
detection
No error
detection
Time
Time
Time