All rights reserved 86 Service Manual e-Series (EN) 1.1.8
6.3 Error codes
In the error codes, multiple terms are used for the same components and codes until C271 are shared between robot generations.
• On the Safety Control Board: Processor A = A uP = SafetySys1
• On the Safety Control Board: Processor B = B uP = SafetySys2
• PSU = Power Supply
• PC = Controller
Buffer of stored warnings overflowed
Outbuffer to RS485 overflowed (problem with
Controller message)
Communication with Controller lost.
Between Control Board and Motherboard
a) Check Ethernet cable between Control Board and Motherboard,
check that a script or UR+ software is not overloading the
communication between the Control Board and Motherboard.
b) Do a Complete rebooting sequence.
c) Update the software
Communication with Safety Control Board A
uP lost
a) Check TCP/IP connection between Motherboard and Control
Board.
b) Do a Complete rebooting sequence.
c) Replace Safety Control Board
Communication with Safety Control Board B
uP lost
a) Check TCP/IP connection between Motherboard and Control
Board.
b) Do a Complete rebooting sequence.
c) Replace Safety Control Board
Communication with primary Teach Pendant
uP lost
a) Check RS485-12V connection between Motherboard and Teach
Pendant.
b) Do a Complete rebooting sequence.
c) Replace Teach Pendant
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