Siemens SIMATIC S5 Manual page 312

PLC Error Messages
Error Con-
Error Message Text
Identi- sec.
fier No.
Progr.
90 01
Wrong module address
Programming error
Additional info 1:
Module address
90 02
DB1 not present in PLC
Handling error
B-52
Possible Cause
Error group No. 12
- Wrong configuration
Error group No. 16
- Configuration DB not loaded
S5-115F Manual
Remedy
- Check configuration
Warm restart:
1. Stop/Run
- Load configuration DB into
PLC
Warm restart:
1. Stop/Run
EWA 4NEB 811 6149-02