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MELSEC-Q
3 SPECIFICATIONS
REMARK
The following table shows the lower limit value, offset value, and gain value for each
range.
Table 3.4 Lower limit value, offset value, and gain value for input range (Q64AD-GH)
Input Analog input range Lower limit value Offset value Gain value
Voltage
0 to 10V 0V 10V
0 to 5V 0V 5V
1 to 5V 1V 5V
1 to 5V (Extended mode) 1V 5V
-10 to 10V -10V 0V 10V
User range setting
(Uni-polar)
Analog value set as the offset value by the user
Analog value set as the
gain value by the user
User range setting
(Bi-polar)
Analog value corresponding
to a digital value of -64000
Analog value set as the
offset value by the user
Analog value set as the
gain value by the user
Current
0 to 20mA 0mA 20mA
4 to 20mA 4mA 20mA
4 to 20mA (Extended
mode)
4mA 20mA
User range setting
(Uni-polar)
Analog value set as the offset value by the user
Analog value set as the
gain value by the user
Table 3.5 Lower limit value, offset value, and gain value for input range (Q62AD-DGH)
Analog input range Lower limit value Offset value Gain value
4 to 20mA 4mA 20mA
4 to 20mA (Extended
mode)
4mA 20mA
User range setting Analog value set as the offset value by the user
Analog value set as the
gain value by the user
(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
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