Indirect addressing in RSL5K

[rpraveenkum 5]

How to program the Indirect addressing in the FBD inRSL5000

[TimWilborne 108]

Hi Rpraveenkum Can you give an example of how you are trying to address. The most common error with Rs5000 is you can't index with a multi-dimensional array. Example MyArray[MyIndex] is good MyArray[MyIndex[3]] will not work

[rpraveenkum 5]

I want to do some thing like this

[dom33dom 0]

Hello In a Database: You have to create an array of DINT ( for example TABLE[10] ). And you create an index as a Dint ( for example INDEX ). In FBD Routine : You will be able to use in FBD like this : TABLE[iNDEX]. Use Limit on INDEX to avoid problem with indirect adressing. Bye

[rpraveenkum 5]

I have done same as you explained DINT is an array & TE & TE1 are Index they work fine with Ladder But showing error with FBD

[dom33dom 0]

Hello, You are right, I have just checked that the result was correct. I send you an ACD file example with a step between your operation. It is not possible for this kind of instruction to recieve directly an indirect adressing ( in FBD ). My ACD file is in V15 version. Bye test.ACD

[Autom8n 0]

One way to get around this is: 1. Create dummy variables to pass to function block routine. 2. Jump to routine passing indirectly addressed variables as parameters. 3. Return result. Example attached fbd.ACD

[rpraveenkum 5]

Thanks for all