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l.cardoso · Junior Joined: 05 Mar 2023 Posts: 5 Location: Brazil

Does anyone have datasheets of the D151811-2910 and D151811-3210 ICs found in some CompactLogix 1769-xxx line modules ?

I have some 1769-OB32 and IF8 modules on the bench for repair and they are not communicating with the PLC (It is not found by RSLinx in the rack).

Any tips for repair resolution will be welcome.

Thanks,

Luciano

barras · Junior Joined: 10 Sep 2018 Posts: 1

As I know these are Voltage Source and Voltage Regulator.
To find schematics it is very difficult.

l.cardoso · Junior Joined: 05 Mar 2023 Posts: 5 Location: Brazil

Thank you.

I think it´s an I/O controller with internal EEPROM or memory.

I maybe wrong, but it´s manufactured by NEC or DENSO.