Siemens SIMATIC S5 Manual page 266

PLC Error Messages
Error Con-
Error Message Text
Identi- sec.
fier No.
Progr.
16 04
Long discrepancy time for
current DI bit not found:
Configuration/CPU error
Additional info. 1:
DI byte No.
Additional info. 2:
DI bit No.
16 05
QVZ during DI access:
I/O module error
Additional info. 1:
DI word No.
B-6
Possible Cause
Error group No. 13
- Configuration:
* Long discrepancy time in
discrep. DB not configured
* Discrepancy DB not present
in PLC
- CPU error
Byte address of the current DI bits,
decimal display
Bit No. of the current DI bits,
decimal display
Error group No. 19
- DI module defective
- IM306 defective
- IM304/314 defective
Address of the accessed DI module
S5-115F Manual
Remedy
- Check configuration
- Replace CPU
- Service
Warm restart:
1. POWER OFF/ON
2. Stop/Run
- Replace module
- Replace module
- Replace module
Warm restart:
1. Stop/Run
EWA 4NEB 811 6149-02