Rockwell Automation 1794-OB16D FLEX I/O Diagnostic Modules User Manual - Manual (Page 120)

Publication 1794-UM061A-EN-P - July 2006
118 Simplified Schematics of FLEX I/O Digital Modules
1794-IB16XOB16P 24V DC 16 Input/16 Output Module
ASIC
V
CC
+24V
Output
Device
COM 2
Current Limit Circuit
Thermal Protection
Output FET
+
-
C-43
B-17
24V V 2
C-46
+
-
24V
A-0
C-37
C-35
COM 1
Opto
Isolation
Flexbus
Interface
V 1
Input
Device
C-44
C-36
Typical Simplified Schematic for Input 0 and Output 16
and a 1794-TB32 or 1794-TB32S Terminal Base