Mitsubishi MELSEC Q Series User Manual page 47

3 SPECIFICATIONS
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(5) This function is executed at every sampling processing.
(6) Perform the following procedure to use this function.
1) Set the input signal error detection setting value for the corresponding channel.
2) Enable the A/D conversion of the corresponding channel.
3) Enable the input signal error detection of the corresponding channel.
4) Turn ON the operating condition setting request (Y9).
(7) How to set the input signal error detection upper limit value and the input signal
error detection lower limit value.
The input signal error detection upper value and the input signal error detection
lower limit value is determined on the basis of the input signal error detection
setting value (set in increments of 1 (0.1%)).
By default, the input signal error detection setting value is reflected in both the
input signal error detection upper limit value and the input signal error detection
lower limit value.
To set up input signal error detection with customized values for the upper limit
value only, lower limit value only, or upper and lower limit values, refer to the
section (9).
(a) Input signal error detection upper limit value
This value is determined by adding "the value obtained by multiplying the
width of the input range (gain value – offset value) by the input signal error
detection setting value (input signal error detection upper limit setting
value)" to a gain value.
This setting is limited to a value greater than the gain value.
The setting value (%) is given by the following equation:
(b) Input signal error detection lower limit value
This value is determined by subtracting "the value obtained by multiplying
the width of the input range (gain value – offset value) by the input signal
error detection setting value (input signal error detection lower limit setting
value)" from the lower limit value in the input range.
This setting is limited to a value less than the lower limit value in the input
range.
The setting value (%) is given by the following equation:
MELSEC-Q
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