Rockwell Automation 8520 9/Series CNC Integration Maintenance Manual Documentation Set - Manual (Page 753)

Section 15A
Troubleshooting the Control
15A-43
When the {SERIAL I/O} softkey is pressed on the Main Diagnostics Menu
screen, the Serial I/O diagnostics screen appears. “SERIAL I/O” appears
on the top line of the screen, along with the “SETUP MODE” message
indicating that the control is in setup diagnostics mode.
Important: If ports A and B are both currently communicating with a
peripheral, pressing the {SERIAL I/O} softkey displays the message
“BOTH PORTS ARE BUSY” on the operator panel CRT. This softkey is
disabled until the ports are no longer communicating.
Figure 15A.18 below shows a typical Serial I/O screen.
Figure 15A.18
Serial I/O Diagnostics Screen
RECV XMIT
SERIAL I/O SETUP MODE
SERIAL PORT: A
DEVICE: ALLEN-BRADLEY 1770-SB
PORT TYPE RS232C
BAUD RATE: 1200
PROTOCOL: LEVEL 2
PARITY: NONE
STOP BITS: 1
DATA LENGTH: 8
TIMEOUT: 15 SEC
OUTPUT CODE; N/A
PORT B PORT A PORT B
RECV XMIT
PORT A
Important: If port B is configured for ODS communication, the
{RECV PORT B} and {XMIT PORT B} softkeys are not be displayed.
This prevents the user from using port B when the control is
communicating with ODS.
When any of the 4 (or 2) softkeys displayed on the Serial I/O diagnostics
screen is pressed, a screen similar to that in Figure 15A.19 is displayed:
15A.8
Serial I/O Diagnostics