Siemens SIMATIC IM 151/CPU, Manual

Page: 170 / 218

Instruction List
B-36
ET 200S Interface Module IM 151/CPU
A5E00058783-01
B.21 Load and Transfer Instructions for the Status Word
In-
struc-
tion
Address
ID
Description
Length
in
Words
Typical Execution Time in
s
L STW Load status word* into ACCU1 1.5
Status word for: L STW BR A1 A0 OV OS OR STA RLO /FC
Instruction depends on: Yes Yes Yes Yes Yes 0 0 Yes 0
Instruction controls: – – – – – – – – –
T STW Transfer ACCU1 (bits 0 to 8) to the status
word* 1.4
Status word for: T STW BR A1 A0 OV OS OR STA RLO /FC
Instruction depends on: – – – – – – – – –
Instruction controls: Yes Yes Yes Yes Yes 0 0 Yes 0
* Structure of the Status Word
B.22 Load Instructions for DB Numbers and DB Length
Load the number/length of a data block into ACCU1. The contents of ACCU1 are
saved to ACCU2 first.
The indicators are not affected.
In-
struc-
tion
Address
ID
Description
Length
in
Words
Typical Execution Time in
s
L DBNO Load number of data block 1 3.3
L DINO Load number of the instance data block 1 3.3
L DBLG Load length of data block into byte 1 0.6
L DILG Load length of instance data block into
byte 1 0.6