Universal Robots 2014350001, Service Manual, Page: 105 / 238

C4A94 Packet counter
disagreement in
packet from
processor A to B More than 1 package lost Same as C4A12
C4A95 Packet counter
disagreement in
packet from
processor A to
Teach Pendant and
EUROMAP More than 1 package lost Same as C4A12
C4A100 Communication lost
due to Packet
counter
disagreements More than 1 package lost Same as C4A12
C5A Heavy processor
load warning Too much instructions
being sent at the same time Review communication
frequency between robot and
external equipment
C10A Controller
communication
issue
C10A1 Lost packet from
Controller
C10A101 Controller packet
received too early
C10A102 Packet counter does
not match
C10A103 Controller is sending
packets too often
C11A Bad CRC Serial communication
problem with joint Check black 2-wire
connectors and wires in
joints
C12A Unknown message
error
C14A1 Debug message
C14A2 Debug message
C14A3 Debug message
C17A Communication
error between Safety
Control Board and
Motherboard a) Check Ethernet connection
between circuit boards
b) Do a Complete rebooting
sequence
c) Update the software
Service Manual 99 UR5
7. Troubleshooting
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