Instruction RS in Step5 converting to Step7

 Hi Edras,

i have problem convert s5 to s7 about RS function.

program like this :

L DW 11

L RS 34

L KB 141

+F

Please help me how to use in S7?

Esdras_PLCTag

Thanks,

I solved the problem of the "LIR" and the "TIR" with indirecly address register.

S5 S7
LIR 0..15 ---------- LAR 1 or 2
TIR 0..15 ---------- L "x" [AR1, P#"n","n"] Where "x" can is I or M or DB, etc. and "n" is the start address on register..
Ex.L MW [AR1,P#0.0]

Only RS instruction, I go to change the program, because there isn´t instruction compatible on Step7.
Step 5: Indentify the follow areas with instruction RS
RS 32: Initial address of DX-address list
RS 33: Initial address of FX-address list
RS 34: Initial address of DB-address list
RS 35: Initial address of SB-address list
RS 36: Initial address of PB-address list
RS 37: Initial address of FB-address list
RS 38: Initial address of OB-address list (only 48 words long)

Thanks so Much!!!

Hi TMP,

you don't need this commands at the S7.

these commands set inital addresses at the PLC (S5)

At the S7-300 is this not necessary.

regards
CaOd

Hi Esdras, how did you fix the problem with the BS operator?