RSLx5000 System tag in AOI

DairyBoy

Member
Join Date
Jun 2007
Location
UK
Posts
393
I have placed a "S:FS" tag on a rung in an AOI. It compiles ok (which probably answers my question), but I got to wondering whether it will do what it should at power-up in that location, or are system tags universal?



Thanks.
 
Thanks, jstolaruk. So, first scan of the instruction; not the processor? Would it be the same for a conditionally called subroutine?
 
I was always lead to believe that the S:FS flag was a global flag, although each program had its own associated S:FS, given that, I would say that the S:FS flag would be initiated as its associated program was scanned.


Steve
 
Thanks, jstolaruk. So, first scan of the instruction; not the processor? Would it be the same for a conditionally called subroutine?

Yes. It is worthwhile looking into AOI's different scan modes. An AOI's Prescan does execute when the processor starts, so different then s:fs. All of the modes are in Studio 5K's Online Help.

First Scan Flag is set the first time a program is scanned after the program is uninhibited. So, when using multiple programs, each will have a S:FS bit.

The manual does not say that it will reach down into the subroutine level, so I believe "NO", always assumed at the program level only.
 

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