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1785-l40e 1785-L40E

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Trying to figure out a fix to a processor issue, I have 2 1785-L40E processors a series E and F. Both when inserted into the rack and powered up go straight to a solid red BATT and PROC light as well as a Solid amber Force light, they both wont even attempt to start a boot up sequence. When connected through DH+ and ENET there is no visibility to either of these processors. These are refurbished processors.

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Have you replaced the battery?

Have you tried to connect thru the serial port?

See pdf for status light description(s)

statuslights.pdf

Edited by Mickey

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Check the DIP switch settings on the backplane carefully;   they are different for PLC-5 processors vs. 1771-ASB or -ACN15 communication adapters.

A solid red PROC LED generally indicates an unrecoverable hardware fault, but it can also be an empty RAM memory if there is no battery installed.    If these were not reconditioned by Rockwell, it's likely you just got damaged and untested processors.

Edited by Ken Roach

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