Toshiba V Series User Manual page 29

(1) Analog input
The analog input mode can be set to bipolar or unipolar as shown below with
respective data range.
Bipolar (±5 V, ±10 V, ±20 mA)
The range of digital input with respect to analog input is ±2000 counts for full scale
input (-5 V to +5 V or -10 V to +10 V, -20 mA to +20 mA). Negative data is expressed
as two's complement. A 0.5% margin is provided at upper and lower limit to
compensate for fluctuation in input near full scale input.
15 14
S S
S: Sign bit
Positive "0"
Negative "1"
Unipolar (0 to 5 V, 0 to 10 V, 1 to 5 V, 0 to 20 mA, 4 to 20 mA)
The range of digital input with respect to analog input is 0 to 4000 counts for full scale
input (0 to 5 V, 0 to 10 V, 1 to 5 V, 0 to 20 mA, 4 to 20 mA). A 0.5% margin is provided
to compensate for fluctuation in input near full scale input.
Disconect detect bit
1: Out
Input
Upper limit
Full scale
Zero (lower limit)
Analog input per count
Supplementary
• Disconnect detection operates when the signal line is disconnected in current input (4 to 20
mA) mode.
• Disconnect detection cannot detect correctly when the signal line is disconnected in voltage
input (1 to 5 V) mode.
6F8C0869
13 12 11 10 9
S S S D10 D9
Input
Upper limit +10.050 V +5.025 V
Full scale (+) +10.000 V +5.000 V
0
Full scale (-) -10.000 V
Lower limit -10.050 V
Analog input per
5.0 mV
count
15 14 13 12 11 10
A 0 0 0 D11 D10 D9
0: Normal (Valid in 4 to 20 mA mode)
0 to 5 V 0 to 10 V
5.025 V 10.050 V
5.000 V 10.000 V
0 V 0 V
1.25 mV 2.5 mV
8 7 6 5
D8 D7 D6 D5
Analog value
± 10 V ± 5 V ± 20 mA
mode mode mode
+20.100 A
+20.000 A
0 V 0 V 0 A
-5.000 V -20.000 A
-5.025 V -20.100 A
10 µ A
2.5 mV
9 8 7 6 5
D8 D7 D6 D5
Analog value
1 to 5 V 0 to 20 mA 4 to 20 mA
5.020 V 20.100 mA 20.080 mA
5.000 V 20.000 mA 20.000 mA
1 V 0 mA 4 mA
5 µA 4 µA
1 mV
1.2 AD368
4 3 2 1 0
D4 D3 D2 D1 D0
Digital value
Hex Integer
07DAH 2010
07D0H 2000
0000H 0
F830H -2000
F826H -2010
4 3 2 1 0
D4 D3 D2 D1 D0
Digital value
Positive
Hex
integer
0FB4H 4020
0FA0H 4000
0000H 0
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