Rockwell Automation 1769-OF4VI Compact I/O Isolated Analog Modules - Manual (Page 15)

Publication 1769-UM014B-EN-P - May 2010
Overview 1-7
Output Modules Block Diagram
The output modules use one digital-to-analog (D/A) converter per isolated
output channel to convert the digital output data from the controller to an
analog output signal.
Figure 1.5 1769-OF4CI Block Diagram
DAC
0
OPTO
LED
OPTO
OPTO
OPTO
DC / DC
Converter
DC / DC
Converter
CPU ASIC BUS
0
Iout0+
Iout0-
+
_
DAC
3
3
Iout3+
Iout3-
+
_