Siemens SIMATIC S5 Manual page 264

PLC Error Messages
Error Con-
Error Message Text
Identi- sec.
fier No.
Progr.
14 01
Operating modes in A and B
not defined: CPU error
Additional info. 1:
Operating mode requests
A and B
B-4
Possible Cause
Error group No. 13
Operating modes of A and B
(entered with CPU frontplate
switches) wrongly entered:
- CPU error
S5-115F Manual
Remedy
- Replace CPU
- Service
Warm restart:
1. POWER OFF/ON
2. Stop/Run
EWA 4NEB 811 6149-02