Rockwell Automation 8520 9/Series CNC Integration Maintenance Manual Documentation Set - Manual (Page 141)

9
8
1
Port A
15
Section 4A
Primary 9/260 and 9/290 Components
4A-7
Figure 4A.7
CPU Board
Used only for extended program storage
Super Capacitor
EPPS Jumper
Connector to
Motherboard
Connector to
Motherboard
Flash Memory
on SIMMS Side View
High--Speed Shadow RAM
Front View
Front
Plate
RS--232
Port
Green
LED
RS-232 Port (Port A)
Serial port A is used to transmit data to and from peripheral devices. It is
configured for RS-232 communications only. Figure 4A.8 shows this
connector and lists the pin assignments of Port A. For more information
on the signals of each pin, refer to page 8-1.
Figure 4A.8
Port A (has pin sockets) and Pin Assignments
Pin Assignment
1 Chassis GND
2 Send Data
3 Receive Data
4 Request to Send
5 Clear to send
6 No connection
7 Signal GND
8-15 Not Used