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3 SPECIFICATION
3.4.1 Voltage input characteristic
4000
3000
2000
1000
0
-10
Fig. 3.5 Voltage input characteristic graph
3 - 9
An example of voltage input characteristic graph when the offset/gain settings are
changed is shown in Fig. 3.5.
2)
4)
0
Analog input voltage (V)
[Example]
On the characteristic graphs 1) to 4), the digital output voltage will be as follows when
the analog input value is set to 1 V and 3 V:
No.
Analog input value
1 V
1)
3 V
1 V
2)
3 V
1 V
3)
3 V
1 V
4)
3 V
POINT
• When a voltage that exceeds the range of -15 V to 15 V is input, the elements
may be damaged.
• The overall accuracy is the accuracy outlined in the performance specifications
when the input voltage is in the range of -10 to 10 V. If the input voltage is
outside the range of -10 to 10 V, the accuracy may not be as indicated in the
performance specifications.
• When a value which causes the digital output value to exceed the maximum
(4095) or minimum (0) digital value is input, the digital output value will be fixed at
the maximum (4095) or minimum (0) digital value.
3)
1)
10
Digital output value
400
1200
800
2400
0
2000
2200
2600
MELSEC-A
The voltage input characteristic when the
offset value and gain value are set as shown
in the table below, is shown in the figure.
Offset value
1)
0 V
2)
0 V
3)
1 V
4)
-10 V
Gain value
10 V
5 V
5 V
10 V
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