Rockwell Automation 8520 9/Series Hardware TAB 5 - Manual (Page 8)

Section 5A
9/440 Resolver–based CNC/Drive System
5A-6
The CNC processor board contains the main CPU. It provides connection
for the 9/Series:
fiber optic I/O ring
E–Stop string
connection to peripheral devices (two serial ports A and B)
video
connection
Figure 5A.2
CNC Processor Board
Serial Port A
Video
Front of
System Module
I/O Ring
Connectors
Serial Port B
E–Stop
Connector
TB1
Optional
RAM
SIMMS
R–I/O
LED
Flash
SIMMS
Option
Chip
Xilinx LED
Watchdog LED
5A.2
CNC Processor Board