Universal Robots UR5 Service Manual page 101

7. Troubleshooting
C4A1 Communication with
PC lost.
C4A2 Communication with
Safety Control Board
A uP lost
C4A3 Communication with
Safety Control Board
B uP lost
C4A4 Communication with
primary Teach
Pendant uP lost
User Manual
Between Safety Control
Board and Motherboard
If either processor A or
processer B is
communicating, the Safety
Control Board or cable
between the Motherboard
and Safety Control Board is
defect
If either processor A or
processer B is
communicating, the Safety
Control Board or cable
between the Motherboard
and Safety Control Board is
defect
If either processor A or
processer B is
communicating, the Teach
Pendant or cable between
the Motherboard and Teach
Pendant is defect
95
a) Check Ethernet cable
between Safety Control
Board and Motherboard,
check that a script or UR+
software is not overloading
the communication
between the Safety Control
Board and Motherboard.
b) Do a Complete rebooting
sequence as per section
5.3.7
c) Update the software
a) Check TCP/IP
connection between
Motherboard and Safety
Control Board.
b) Do a Complete rebooting
sequence as per section
5.3.7
c) Exchange Safety Control
Board
a) Check TCP/IP
connection between
Motherboard and Safety
Control Board.
b) Do a Complete rebooting
sequence as per section
5.3.7
c) Exchange Safety Control
Board
a) Check RS485-12V
connection between
Motherboard and Teach
Pendant.
b) Do a Complete rebooting
sequence as per section
5.3.7
c) Exchange Teach
Pendant
UR5