Fbd

I am new to FBD programming.!!! my question was about one thing I have noticed in FBD is that we can't call a subroutine. Is this a correct observation ?? My immediate senior colleague tells me that the part about subroutine call I should write in ladder. The program will take care about jumping between ladder and FBD as per the addresses involved. I am not convinced. I feel there must be some way to cater to this facility in FBD. I would appreciate any inputs regarding this...

The JSR instruction jumps execution to a different routine. The SBR instruction passes data to and executes a routine. The RET instruction returns the results.

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Above is a copy and paste from RSLogix 5000 help file on the JSR instruction. You can win the arguement. Regards Alan

I assumed you were using Rockwell RSLogix 5000

Nikhil,
you didnt state which PLC is used.
But if it is an S7, then Jumps and subroutine calls can be done in any language.

Thank you

Thanks Alan and Jesper!!! I did check out the help of RSLogix 5000 (that is what I am using...) and to my satisfaction, I found the SBR, RET instructions in FBD. I'll try and write my program using FBD thru and thru now.