Siemens S5-100U User Manual page 142

Introduction to STEP 5
Determining the Processing Mode in the ISTACK
Bit
Byte
1
2
.
.
.
6
7
.
.
.
Figure 7-11. Display of the Processing Mode in the ISTACK
You can use a programmer to check the current processing mode in the ISTACK. The ISTACK
display, byte 6, is possible in RUN and STOP (see section 5.2).
KEIN AS=1 : Test mode
Execution time is 70 ms/1024 binary statements. There are no limitations on the test or operator
functions.
KEIN AS=0: Normal mode
Execution time is 7 ms/1024 binary statements. There are limited test and operator functions.
7-22
.
7 6 ..
KEIN
AS
S5-100U
EWA 4NEB 812 6120-02