Siemens SIMATIC S5 Manual page 311

S5-115F Manual
Error Con-
Error Message Text
Identi- sec.
fier No.
Progr.
74 03
DB1 not present in PLC:
Handling error
74 04
PLC cannot be activated:
Handling error or CPU error
Additional info. 1:
I/O module type
Additional info. 2:
DB No.
Additional info. 3:
DB address
EWA 4NEB 811 6149-02
Possible Cause
Error group No. 16
- DB1 not in user EPROM
(Safety mode)
- DB1 not loaded in PLC
(Test mode)
Error group No. 16
- Configuration DB missing
- Configuration DB address
wrongly calculated by operating
system
PLC Error Messages
Remedy
- Configure DB1 with
COM 115F and transfer to PLC
Warm restart:
1. Stop/Run
- Check configuration DBs
- Replace CPU
Warm restart:
1. Stop/Run
B-51