Is it possible to give an Array of flags as FB parameters?
FAQ #100724
When calling an FB, the parameters should be given as an Array of flags. On compining there is an error message: "missing fb parameters displayed".
Problem
The code below does not work. On compiling / linking the error message "missing FB parameters" is displayed.
COB 0
0
CFB 1
Arrayflag
ECOB
FB 1
flag1 EQU =1
flag2 EQU flag1+1 ;this is "= 2"
STH flag1
STH flag2
EFB
Reason
Currently it is not possible to handle arrays as FB parameters.
Solution
There is an easy way to do the same thing. An "array" is really a base address + an offset. So you can pass the base address to the FB, and then use the Index register as the offset:
Arrayflag EQU F [3]
...
CFB 1
Arrayflag
...
FB 1
flag1 EQU =1
STH flag1 ;same as STH Arrayflag[0]
SEI K 1
STHX flag1 ;same as STH Arrayflag[1]
SEI K 2
STHX flag1 ;same as STH Arrayflag[2]
EFB
Categories
Local FAQ Deutschland / SEdit (IL programming)
Last update: 21.05.2015 06:03
First release: 14.06.2007 07:47
Views: 1792