nurlaub

1756 Chassis backplane Port Pinout

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I was curious if anyone knows if the pin-out of ports to the 1756 chassis backplane are documented.

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I don't think Rockwell shares this information. I know there is 5VDC on the chassis backplane as part of their communication protocol. Backplanes can fail and it is quite obvious when they do (outputs are not turning on while you inserted a new card) or lightning damage on equipment. There is no extension or interconnect cable for 1756 chassis unlike  the SLC rack that allows you to backtrace what each pin does. The only way to hook up a second rack is through another form of communication (ethernet, devicenet,...). You have peeked my curiosity on that matter. 

 

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