Simatic Accu

gery

Member
Join Date
Jun 2002
Location
Timisoara
Posts
17
Hi,
Can someone provide some information about the ACCU of SIMATIC. I have a list with the bits from the ACCU but I can't find what they represent, a short explanation would help.
1 BR
2 CC1
3 CC0
4 OV
5 OS
6 OR
7 STA
8 RLO
9 /FC

This are taken from the SIMATIC Manual, I found an explanation for RLO, but I don't know what the other are doing. :rolleyes:
 
The ACCU in simatic stands for the accumilator, the figure in the ACCU will be what has been loaded into it for example :-

C DB10
L DW20

If dataword 20 of DB10 contained the decimal number 300 then the accumilator will show 300.

Paul
 
Accu

I belive i was not enough explicit

I would like to know what BR, CC0, CC1, OV, OS, OR, STA, RLO, /FC means,
I know that RLO comes from Result of Logical Operation, I would like to know what represent the rest of the "symbols".
 
BR binary result
CC 0 and 1 are condition code bits
/FC(the line above FC) First check bit
OV overflow
STA status
OS stored overflow
OR is OR command

This is in Chapter 8 of the Statement List Programming Manual
C79000-G7076-C505-02 is the order number I think. I tried finding it on Siemens site but havent yet.
 

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