Table of Contents
Advertisement
Procedure for Error Analysis
5.3
Procedure for Error Analysis
5 - 8
If the CPU is in an abnormal stop mode, make use of all the
information available to analyze the error, as follows:
Step
1
Check the status of the STOP and SYS FAULT
LEDs and the error LEDs on the front panel. These
indicate causes of certain errors and interruptions.
2
Using the PG online function OUTPUT ISTACK,
analyze the status of the control bits and the
content of the ISTACK. This will provide you
with further information about the location of the
error and its cause.
3
Select the PG online function OUTPUT BSTACK:
in the top line of the BSTACK display you will
find information about the block which called the
block causing the error.
4
The system data RS 75 (refer to Section 8.3.4) also
contains further detailed error information.
Action
CPU 948 Programming Guide
C79000-G8576-C848-04
Advertisement
Table of Contents
