I/O Data Types And Allocation Methods - Omron DRT2 Series Operation Manual

Analog Output Terminals
Output Range: 0 to 20 mA
DA Conversion Data
Dimensions
7-4-2

I/O Data Types and Allocation Methods

1,2,3...
176
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.
Current
21 mA
20 mA
0 mA
0000 (0)
FFFF
DA conversion data is output from the Master as shown in the following dia-
gram.
15 14 13 12
Word +0
Output 0 DA conversion data
Word +1
Output 1 DA conversion data
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.
115
Analog Output Terminals support one type of output data and input data
(Generic Status Flags) each. I/O can be allocated in the Master using one of
the following three methods.
1. Allocating only analog output values (default I/O data) in the Master.
2. Allocating selected I/O data.
3. Allocating user-defined I/O data.
1770 189C
(6000) (6300)
11 10 9 8 7 6 5 4
Section 7-4
Conversion data
Hexadecimal (decimal)
7FFF
3 2 1 0
43.9
29.9
49.7