Siemens SIMATIC S5 - Page 188

R02/92
Programming Instructions
9.6.3.1 Interrupt Processing
Starting with firmware status R08, the interrupt behavior of the module can be modified by writing
the block address +4 as follows:
KH = El
– Interrupt identifier bits deleted after reading byte 7
KH = E2
– Interrupt identifier bits not deleted after reading byte 7
– Bit 4 is set by byte 7 during the read access
Interrupt line
IR is always reset however.
Point in time of the write access for:
KH = El
– Interrupt program (otherwise no further interrupt possible)
KH = E2 – Startup OB
For use be standard function blocks after calling FB 156
(Call performs reset of the module.)
Example for module address 144:
OB 20:
9
a
#
o
I
1
JU F’B 156
I
1
0
I
a
8
I
I
o
0
I
9
LKHE2
T~Y 148
1
I
I
I
I
BE
1
I
I
JU FB 157
(~SKB)
LKBO
TMB 190
TMB 191
I
I
I
LKHE2
TPY 148
BE
9 – 67
1P 241 Equipment Manual
@ .Siemens AG 1989, Order No.: 6ES5 998-0KD21
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com