1734-ADN w/Io Modules

[SandyB 0]

I have a 1734-ADN module supplying 3 1734-IB4 modules and 1 1734-OB4E module. The input modules are on TB3 bases and the output on a TB. My question is the following: does the ADN provide power to all the modules over the backplane? I see the inputs have 4,5 as common and 6,7 as +24V where the outputs have 4,5,6,7 as common terminals?? Currently I have not got a common wired seperately to the outputs and I am thinking I need it since I have flashing red leds on the outputs which indicates an open circuit. Edited 29 Jun 2009 by SandyB

[BobLfoot 301]

The following manual http://literature.rockwellautomation.com/i...wd001_-en-p.pdf describes the wiring of each and every 1734 module. It should have the answer you seek..