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Error Diagnosis and Elimination
15.3.8 Error Stack Entries
All errors detected by the operating system during a cycle are flagged in the error stack. The error
stack consists of:
•
An error block counter
•
A write pointer
•
16 error blocks of 8 data words each
Data Word
DW 61
DW 62
DW 63
DW 64 to 71
DW 72 to 79
DW 80 ....
.
.
.
DW 184 to 191
Error Block Counter
The operating system enters the number of errors which occurred in data word DW 61. The entry
may be a number between 0 and 65535.
Write Pointer
The write pointer identifies the last error block entered. This pointer is located in DL 62, and
contains the number of the error block+1.
15-8
Error block counter
Write pointer
Unassigned
Error block 0 with bits for type of error, cause of error, auxiliary information
and time stamp
Error block 1 with bits for type of error, cause of error, auxiliary information
and time stamp
Error blocks 3 to 14
Error block 15
Contents of the Data Words
S5-95F
EWA 4NEB 812 6210-02
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