Mitsubishi MELSEC Q Series User Manual page 48

3 SPECIFICATIONS
Table 3.4 Lower limit value, offset value, and gain value for input range (Q64AD-GH)
Input Analog input range
1 to 5V (Extended mode)
Voltage
4 to 20mA (Extended
Current
Table 3.5 Lower limit value, offset value, and gain value for input range (Q62AD-DGH)
Analog input range
4 to 20mA (Extended
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REMARK
The following table shows the lower limit value, offset value, and gain value for each
range.
0 to 10V
0 to 5V
1 to 5V
-10 to 10V
User range setting
(Uni-polar)
User range setting
Analog value corresponding
to a digital value of -64000
(Bi-polar)
0 to 20mA
4 to 20mA
mode)
User range setting
(Uni-polar)
4 to 20mA
mode)
User range setting
(8) Example of setting the input signal error detection
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)
Suppose that the following values are substituted into the equation for the input
signal error detection lower limit value:
• Input signal error detection lower limit value: 2.4mA
• Lower limit value in the input range (offset value): 4.0mA
• Gain value: 20.0mA
Lower limit value
0V
0V
1V
1V
-10V
Analog value set as the offset value by the user
Analog value set as the
offset value by the user
0mA
4mA
4mA
Analog value set as the offset value by the user
Lower limit value
4mA
4mA
Analog value set as the offset value by the user
MELSEC-Q
Offset value
0V
Analog value set as the
gain value by the user
Analog value set as the
gain value by the user
Analog value set as the
gain value by the user
Offset value
Analog value set as the
gain value by the user
Gain value
10V
5V
5V
5V
10V
20mA
20mA
20mA
Gain value
20mA
20mA
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