Siemens SINUMERIK 802S Technical Manual page 17

Operating elements Start-up switch S3
Fuse
S2 and D15
SINUMERIK 802S base line
Start-Up
DI/O
X100 to X105
z
10-pin front connector for connecting digital inputs
X200 and X201
z
10-pin front connector for connecting digital outputs
Fuse F1, externally designed to allow users for convenient replacement.
These elements are provided only for debugging internally.
Installing the Control System
2-5