Siemens SIMATIC S7-200 - IEC FBD Program for Using a Subroutine and an Interrupt Routine

Basic Concepts for Programming an S7-200 CPU
4-21
S7-200 Programmable Controller System Manual
A5E00066097-02
Network 1
Network 1
IN100
MOVE
OUT %SMB34
EN%SM0.0
INT0
ATCH
EN
EVENT10
Network 1
IN%AIW4
MOVE
OUT &VW100
EN
IEC FBD
MAIN PROGRAM OB1
SUBROUTINE 0
INTERRUPT ROUTINE 0
%SM0.1
SBR0
EN
ENI
ENENO
ENO
ENO
%SM0.0
Figure 4-11 IEC FBD Program for Using a Subroutine and an Interrupt Routine