Mitsubishi Electric Melsec Q Series User Manual page 99

5 UTILITY PACKAGE (GX Configurator-AD)
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Analog/Digital conversion: Select a conversion type shown below for confirming
Analog value: <When converted to a digital value>
<When converted to an analog value>
Digital value: <When converted to a digital value>
<When converted to an analog value>
POINT
(1) The following explains offset value and gain value.
• An offset value refers to the analog input value (voltage or current) whose
Digital output value be 0.
• A gain value refers to the analog input value (voltage or current) whose
Digital output value is:
4000 (in normal resolution mode)
12000 (in high resolution mode)
(2) Set the "offset value" and "gain values" within a range in which the following
conditions are met.
(a) When selecting "Voltage" in the "Analog/Range setting".
1) Setting ranges of the offset value and the gain value: -10.0 to 10.0V
2) Normal resolution mode: { (Gain value) - (Offset value) } > 1.5V
High resolution mode: { (Gain value) - (Offset value) } ≥ 4.0V
3) { (Gain value) - (Offset value) } ≤ 10.0V
(b) When selecting "Current" in the "Analog/Range setting".
1) Setting ranges of the offset value and the gain value: -20.0 to 20.0mA
2) Normal resolution mode: { (Gain value) - (Offset value) } > 5.5mA
High resolution mode: { (Gain value) - (Offset value) } ≥ 16.0mA
(3) Explanation of screen command buttons
Range setting
Conversion
the correspondence between an analog value and a
digital value caused by the conversion characteristic.
 Digital
Analog
 Analog
Digital
Enter an analog value to be converted to a digital value
The analog value converted from a digital value is displayed.
The digital value corresponding to an entered analog value is
displayed.
Enter a digital value to be converted to an analog value.
The entered offset/gain value is determined, and the I/O
characteristic diagram is updated.
Conversion for the entered value is performed.
MELSEC-Q
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