Communications
Troubleshooting
Table
Symptom
Corrective Action
SC950 will not
respond to
commands over
the serial link
Verify that SC950 is NOT running a program (
8.
or
0.
on status
display).
Verify that axis address is set to 255 using switch S1.
Verify that baud rate and COM port are set correctly in the 950
IDE.
Check terminal transmit and receive lines from computer to
receive and transmit lines on J51. (See Section 3.2)
Verify that the serial cable is functioning properly.
1. Disconnect serial cable from J51.
2. Short pins 2 & 3 (See Section 3)
3. Type a character on the keyboard.
4. Verify that character entered echoes back to output window.
Verify that three wire serial cable is connected to J51.
Internal failure. Return to factory for service.
SC950 will not
respond during
RS-422/RS-485
operation
Verify that each unit has a unique serial address using switch S1.
(See Section 3.2)
If problems continue to exist, please contact your local distributor
for further assistance.
5 - 12
MA950
