Siemens CPU 948 User Manual

4.1 Program Execution Levels
Fig. 4-2 provides you with an overview of the program processing
levels in the various modes. The explanations of the abbreviations are
on the following page.
Error levels
Program execution levels
Status
SOFT
STOP
START-UP
RUN
KDB
FEDBX
KB
PARE
QVZ
ADF
TRAF
SUF
ZYK
WEFES/WEFEH
FEDBX
KDB
KB
PARE
QVZ
ADF
TRAF
SUF
COMMUNICATION
Cyclic processing
of communication
COMMUNICATION START-UP
Preparing for
communication
START-UP
WARM RESTART
COLD RESTART
PROCESS INTERRUPTS/INTERRUPTS
Interrupt-driven
program execution
CYCLE
Cyclic program
execution
TIMED INTERRUPTS
Time-controlled
program execution
FEDBX
KDB
KB
PARE
QVZ
ADF
TRAF
SUF
ZYK
Fig. 4-1 Program execution levels
Program Execution Levels
CPU 948 Programming Guide
4 - 4 C79000-G8576-C848-04

Siemens CPU 948 Specifications

General

Brand	Siemens
Model	CPU 948
Category	Controller
Language	English