Universal Robots 2014350001, Service Manual, Page: 194 / 238

C309A10 Lost more than
allowed Keep-Alive
System messages in
a row from Safety
Control Board-uPA An invalid amount of Keep-
Alive System messages
have been lost from the
Safety Control Board
Processor A a) Conduct a complete
rebooting sequence
b) Update software
c) Contact your local
Universal Robots service
provider for assistance
C309A11 Lost more than
allowed Keep-Alive
System messages in
a row from Safety
Control Board-uPB An invalid amount of Keep-
Alive messages have been
lost from the Safety Control
Board Processor B a) Conduct a complete
rebooting sequence
b) Update software
c) Contact your local
Universal Robots service
provider for assistance
C309A12 Keep-Alive System Go-to-Violation command
received in Keep-Alive
System message from SCB-
uPA.
C309A13 Keep-Alive System Go-to-Violation command
received in Keep-Alive
System message from SCB-
uPB.
C309A14 Keep-Alive System Invalid command received
in Keep-Alive System
message from SCB-uPA.
C309A15 Keep-Alive System Invalid command received
in Keep-Alive System
message from SCB-uPB.
C311A0 Delay Callback The timer is not available
C312A Data validation
C312A0 Critical error A critical error occurred
during data validation a) Do a Complete rebooting
sequence
b) Check for ESD noise.
c) Update software
d) Contact your local
Universal Robots service
provider for assistance.
C312A1 Data validation Missed several packages
C312A2 Data validation Unexpected sequence
C312A3 Data validation Several failures in a row
C312A4 Data validation Received a package at an
unexpected time
C312A5 Data validation Package had unexpected
type
UR5 188 Service Manual
7. Troubleshooting
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