Siemens CPU 31 Series Technical Data Manual page 232

Glossary
Proxy
PROFINET Device
→
Real Time
Real Time
→
Reference ground
Ground
→
Repeater
Hub
→
Router
Default Router
→
Switch
→
RT
Real Time
→
Segment
Bus segment
→
SFB
System function block
→
SFC
System function
→
Slave
Master
→
Substitute
Proxy
→
Timer
Timers
→
Glossary-6
CPU 31xC and CPU 31x, Technical Data
Manual, 01/2006 Edition, A5E00105475-06