I/O Data And Allocation Methods; Functions And Setting Methods - Omron SmartSlice GRT1 Series Operation Manual

Analog Output Units
Dimensions
5-5-2

I/O Data and Allocation Methods

5-5-3

Functions and Setting Methods

Scaling
Default Scaling
When the Analog Output Unit's default settings are used, output data is allo-
cated. No special settings are required. Two words (four bytes) of output data
are allocated as two's complement.
15
Analog output value for Output 0
Analog output value for Output 1
The default setting is used to perform DA conversion, converting analog out-
put values that have been scaled to a count of 0 to 6,000 into corresponding
digital values in the output signal range. Scaling can be used to change
scaled values that correspond to the output signal range into other values
required by the user (industry unit values). Scaling also eliminates the need
for ladder programming in the Master to perform math operations. The follow-
ing two methods of scaling can be used.
Default scaling converts analog output values into voltage or current values.
The units used are mV or
formed according to the output range, as shown in the following table.
Output 0 to 5 V 0 to 10 V
range
100% 5,000 mV 10,000
mV
0% 0000 mV 0000 mV
Off-wire --- ---
(88.5)
14.1
15
8 7
µ
A. When default scaling is selected, scaling is per-
1 to 5 V –10 to 10 V
5,000 mV 10,000 mV
1,000 mV –10,000 mV 0000
7FFF hex ---
Section 5-5
74.4
(74.4)
OMRON
0
0 to 20 4 to 20
mA mA
µ
20,000 A 20,000
µ
A 4,000
--- 7FFF hex
µ
A
µ
A
121