Omron CRT1 - 10-2008, Operation Manual

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Analog Output Slave Units Section 6-5
Output Range: 4 to 20 mA The values 0000 to 1770 hex (0 to 6,000) correspond to the current range 4 to
20 mA. The output range is 3.2 to 20.8 mA.
Output Range: 0 to 20 mA The values 0000 to 1770 hex (0 to 6,000) correspond to the current range 0 to
20 mA. The output range is 0 to 21 mA.
DA Conversion Data
DA conversion data is output from the Master Unit as shown in the following
diagram.
When outputting negative voltages, specify the DA conversion data as two’s
complements. The NEG instruction can be used to obtain two’s complements
from absolute values.
F31C
(
−
3300)
F448
(
−
3000)
0CE4
(3300)
0BB8
(3000)
0000 (0)
0 V
11 V
10 V
−
10 V
−
11 V
8000
7FFF
Conversion data
Hexadecimal (decimal)
Voltage
FED4
(
−
300)
189C
(6300)
1770
(6000)
0000(0)
4 mA
0 mA
3.2 mA
20.8 mA
20 mA
8000
7FFF
Conversion data
Hexadecimal (decimal)
Current
189C
(6300)
1770
(6000)
0000 (0)
0 mA
21 mA
20 mA
FFFF
7FFF
Conversion data
Hexadecimal (decimal)
Current
3 0 2 1 4 6 5 7 8 10 9 11 12 14 13 15 Bit
Output 0 DA conversion data
Output 1 DA conversion data
Word +0
Word +1