Siemens SIMATIC TI555 System Manual page 128

P/S TI560
P/S
Figure D-2 Upgrading an RS-485 Based TI560/TI565/TI560T/TI565P System
TI545/TI555 System Manual
R R
C C
TI565
C C
1 2 3
Upgrade Path
TI545
Series 505 I/O
or
4, 8, or 16 slots
TI555
Local I/O
Upgrading Existing Series 500 Installations D-7