Specifications

8. EX MPU and I/O Extension Units
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8-3
1. The analog input is received through a twisted pair shield cable. This cable should be wired separately from power line or any
other lines that may i nduce electrical noise.
2. Connect the ground terminal on the DVP20EX-Series with the grounded terminal on the unit; use class 3 grounding on the
unit.
Either voltage or current input can be selected with your choice of input terminal.
Analog input
-512
+511
-10V +10V
-512
+511
-20mA +20mA
Digital
Output
Voltage
Input
Digital
Output
Current
Input
There are four channels (CH0~CH3) that accept analog inputs. The PLC will convert the analog into a digital format and save
it in the corresponding data registers D1110~D1113.
Analog conversion
Channel Analog signals
Reactin
g
time
Input
terminals
Resolution
(bits)
Accuracy
Reg.
Conversion
range
A
0
V+~A
0
V-
CH0 5ms
A
0
I+~A
0
I-
10 D1110 -512~+511
A
1
V+~A
1
V-
CH1 5ms
A
1
I+~A
1
I-
10 D1111 -512~+511
A
2
V+~A
2
V-
CH2 5ms
A
2
I+~A
2
I-
10 D1112 -512~+511
A
3
V+~A
3
V-
CH3
Voltage: –10V~+10V
Input impedance: 40KӨ
Current: -20mA~+20mA
Input impedance: 250Ө
5ms
A
3
I+~A
3
I-
10
±1% at full
scale of
±10V and
±20mA
D1113 -512~+511
Example:
Added in +5V to Ch1,
and added –5mA to Ch2,
the Analog/Digital (A/D)
conversions are:
D1111 = 256,
D1112 = -128