Dear All,

I am working on S7-400 H Project. Can anybody give me Sample project and redundancy programming manual.

Thanks,

Regards,

maddy

Dear hdhossaini

thanks for your support. 

In sample project they have given example of DI/DI module. I want to make AI module redundant. I configured AI module as redundant and connect common input to both module channel. I am getting input value to both channel, is this ok or i am doing wrong. 

    CALL  "RED_IN" , DB10             //Redundant IO: Inputs

       RETURN_VAL:=MW10

       EXT_INFO  :=MW12

      L     PIW  518

      T     MW   100

      NOP   0

      CALL  "RED_OUT" , DB11            //Redundant IO - Outputs

       RETURN_VAL:=MW14

       EXT_INFO  :=MW16

      BE    

Regards

Maddy

 Hello Maddy,

I think "as pointed earlier by hdhosseini", you should read the manual first and also this PCS7 document "just for guidance if you are not working with PCS7".

Please, read the document carefully to save your time in future.

Anyhow, for this moment, your piece of code doesn't seem to be OK.

You should always use process images and avoid peripheral addressing.

L PIW518 & T PQW518  are wrong .

L IW518 & T PQW 518 are correct.

Best regards,

H-H

New question published by afroz86 is split to a separate thread with the subject Redundant system, AO not getting proper value.

Best regards
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