3 - 4 3 - 4
MELSEC-A
3 SPECIFICATION
3.3.1 Voltage output characteristics
The voltage output characteristic graph is shown below.
A
n
al
og o
u
tput
volt
a
ge (V
)
Digital input value
3
2
1
4095
4000
2000
-2000
-4000
-4096
-10
-5
0
5
10
P
ra
ct
ical a
na
log ou
tput
sc
op
e
0
1
Number
Analog Output Range Setting
Offset Value
Gain Value
Digital Input Value
Maximum Resolution
1)
-10 to +10v
0V
10V
-4000 to +4000
2.5mV
2)
0 to 5V
0V
5V
1.25mV
3)
1 to 5V
1V
5V
0 to 4000
1.0mV
—
User range setting 1
(-10 to +10v)
0V
10V
-4000 to +4000
2.5mV
—
User range setting 2
(0 to 5v)
0V
5V
0 to 4000
1.0mV
Fig. 3.1 Voltage Output Characteristic
POINT
(1) Within the digital input and analog output scopes of each output range, the
maximum resolution and accuracy are within the performance specification
range. Outside those scopes, however, they may not fall within the performance
specification range. (Avoid using the dotted line part in Fig. 3.1.)
(2) Set the offset and gain values of the user range setting within the range
satisfying the following conditions.
(a) Setting range when user range setting 1 is selected: -10 to +10V
(b) Setting range when user range setting 2 is selected: 0 to 5V
(c) (Gain value) > (Offset value)
If you attempt to make setting outside the setting range of (a) or (b), the "RUN"
LED flickers at 0.5s intervals.
Set the values within the setting range.
If you attempt to make setting outside the setting range of (c), the "RUN" LED
flickers at 0.5s intervals.
Make setting again.
