Mitsubishi GX Configurator-AD, User Manual

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3 - 7 3 - 7
MELSEC-Q
3 SPECIFICATIONS
(b) Current input characteristic
Fig. 3.2 shows a graph of the current input characteristic.
1)
2)
65535(32767)
64000(32000)
0
-1536(-768)
-10 0 10 20 30
4
Analog input practical range
Analog input voltage (mA)
Di
gi
ta
l o
u
tput
val
u
e
The value within parentheses indicates the digital output value (16 bits).
Maximum resolution
Number
Analog input
range setting
Offset
value
Gain
value
Digital output value
(32 bits) 2
Digital output value
(16 bits) 2
32 bits 16 bits
1) 4 to 20mA 4mA 20mA 250.0nA 500.0nA
2) 0 to 20mA 0mA 20mA 312.5nA 625.0nA
—
User range setting
(Uni-polar)
1 1
0 to 64000 0 to 32000
151.6nA 303.2nA
Fig. 3.2 Current input characteristic of Q64AD-GH
POINT
(1) Set within the analog input range and digital output range for each input range.
If these ranges are exceeded, the maximum resolution and accuracy may not
fall within the performance specifications. (Avoid use in the dotted area of Fig.
3.2.)
(2) Do not input an analog input current of more than ± 30 mA. A breakdown may
result due to overheating.
(3) Set the offset/gain values for the user setting range 1 within a range in which
the following conditions are satisfied.
(a) Gain value 20mA, offset value 0mA
(b) { (gain value) - (offset value) } > 9.70mA
(4) When an analog value that exceeds the range of the digital output value 2 is
entered, the digital output value will be fixed at the maximum or minimum
value.
Digital output value (32 bits) Digital output value (16 bits) Analog input
range setting
Minimum Maximum Minimum Maximum
4 to 20mA
0 to 20mA
User range setting
(Uni-polar)
-1536 65535 -768 32767