Siemens SIMATIC S5-95F Manual page 418

S5-95F
Determine the cause of error.
Ascertain the identifier for the main error report by viewing the contents of byte 1, and
locate the associated plaintext message in the table below.
If indicated in the table, also ascertain the auxiliary info by reading bytes 2 to 7.
Ascertain the time at which the error occurred.
View bytes 12 to 15 to find out the date and time when the error occurred (serves a
practical purpose only when the integrated clock was properly set).
Overview of Error Reports
Error No.
(Decimal) Information
01 Hardware fault on the CPU
board
(Error response: Hard STOP or
soft STOP)
02 Hardware fault on the internal
power supply board
(Error response: Hard STOP)
03 Subunit synchronization error
(Error response: Soft STOP)
04 Too many interrupts
(Error response: Soft STOP)
05 Hardware clock failed
(Error response: Flag)
06 Basic units have different
version numbers
(Error response: Hard STOP)
07 Internal RAM error (hardware
fault)
(Error response: Hard STOP)
EWA 4NEB 812 6210-02
Table 15-2. Evaluating System Events in DB254
Primary
Error Diagnosis and Elimination
Auxiliary
Information
Corrective
Measures
Replace basic unit
Replace basic unit
Check fiber-optics link
Check switch setting or
subunit ID
Shorten OB2
Reduce no. of INTs
Replace basic unit
Replace basic unit
Check version nos.
Replace basic unit
Replace basic unit
15-11