Error codes

What a robot’s error code means, from the maker’s own directory, with a link to the page where the maker says what to do about it.

Type the code from the teach pendant, or words from the message. Each directory is grouped the way the maker prints it: by robot generation, then by section.

Clear

1,223 codes from Universal Robots · page 2 of 31

C4A85 · Packet counter disagreement in packet from Safety Control Board B

Universal Robots · CB3 and Earlier Models

C4 Communication issue

C4A86 · Packet counter disagreement in packet from joint 0

Universal Robots · CB3 and Earlier Models

C4 Communication issue

C4A87 · Packet counter disagreement in packet from joint 1

Universal Robots · CB3 and Earlier Models

C4 Communication issue

C4A88 · Packet counter disagreement in packet from joint 2

Universal Robots · CB3 and Earlier Models

C4 Communication issue

C4A89 · Packet counter disagreement in packet from joint 3

Universal Robots · CB3 and Earlier Models

C4 Communication issue

C4A90 · Packet counter disagreement in packet from joint 4

Universal Robots · CB3 and Earlier Models

C4 Communication issue

C4A91 · Packet counter disagreement in packet from joint 5

Universal Robots · CB3 and Earlier Models

C4 Communication issue

C4A92 · Packet counter disagreement in packet from tool

Universal Robots · CB3 and Earlier Models

C4 Communication issue

C4A93 · Packet counter disagreement in packet from processor A to joints

Universal Robots · CB3 and Earlier Models

C4 Communication issue

C4A94 · Packet counter disagreement in packet from processor A to B

Universal Robots · CB3 and Earlier Models

C4 Communication issue

C4A95 · Packet counter disagreement in packet from processor A to Teach Pendant and EUROMAP

Universal Robots · CB3 and Earlier Models

C4 Communication issue

C4A100 · Communication lost due to Packet counter disagreements

Universal Robots · CB3 and Earlier Models

C4 Communication issue

C10A1 · Lost packet from Controller

Universal Robots · CB3 and Earlier Models

C10 Controller communication issue

C10A101 · Controller packet received too early

Universal Robots · CB3 and Earlier Models

C10 Controller communication issue

C10A102 · Packet counter does not match

Universal Robots · CB3 and Earlier Models

C10 Controller communication issue

C10A103 · Controller is sending packets too often

Universal Robots · CB3 and Earlier Models

C10 Controller communication issue

C14A1 · {float}

Universal Robots · CB3 and Earlier Models

C14 Debug message

C14A2 · {signed}

Universal Robots · CB3 and Earlier Models

C14 Debug message

C14A3 · {unsigned}

Universal Robots · CB3 and Earlier Models

C14 Debug message

C34A0 · Program flash checksum failed during bootloading

Universal Robots · CB3 and Earlier Models

C34 Program flash checksum failed

C34A1 · Program flash checksum failed at runtime

Universal Robots · CB3 and Earlier Models

C34 Program flash checksum failed

C38A1 · Data-bus test failed

Universal Robots · CB3 and Earlier Models

C38 Online RAM test failed

C38A2 · Address-bus stuck-high test failed

Universal Robots · CB3 and Earlier Models

C38 Online RAM test failed

C38A3 · Address-bus stuck-low test failed

Universal Robots · CB3 and Earlier Models

C38 Online RAM test failed

C38A4 · Address-bus shorted test failed

Universal Robots · CB3 and Earlier Models

C38 Online RAM test failed

C38A5 · Memory-cell test failed

Universal Robots · CB3 and Earlier Models

C38 Online RAM test failed

C39A1 · Max current deviation failure

Universal Robots · CB3 and Earlier Models

C39 Logic and Temporal Monitoring Fault

C39A2 · Max joint-encoder speed exceeded

Universal Robots · CB3 and Earlier Models

C39 Logic and Temporal Monitoring Fault

C39A3 · Max motor-encoder speed exceeded

Universal Robots · CB3 and Earlier Models

C39 Logic and Temporal Monitoring Fault

C39A4 · Illegal state change in joint detected

Universal Robots · CB3 and Earlier Models

C39 Logic and Temporal Monitoring Fault

C39A5 · A timing issue occurred during startup.

Universal Robots · CB3 and Earlier Models

C39 Logic and Temporal Monitoring FaultCause given

C39A6 · 5V regulator voltage too low

Universal Robots · CB3 and Earlier Models

C39 Logic and Temporal Monitoring Fault

C39A7 · 5V regulator voltage too high

Universal Robots · CB3 and Earlier Models

C39 Logic and Temporal Monitoring Fault

C39A100 · Watchpoint fault: ADC task timeout

Universal Robots · CB3 and Earlier Models

C39 Logic and Temporal Monitoring Fault

C39A101 · Watchpoint fault: Motor-Control task timeout

Universal Robots · CB3 and Earlier Models

C39 Logic and Temporal Monitoring Fault

C39A102 · Watchpoint fault: Motor-encoder task timeout

Universal Robots · CB3 and Earlier Models

C39 Logic and Temporal Monitoring Fault

C39A103 · Watchpoint fault: Joint-encoder task timeout

Universal Robots · CB3 and Earlier Models

C39 Logic and Temporal Monitoring Fault

C39A104 · Watchpoint fault: Communication task timeout

Universal Robots · CB3 and Earlier Models

C39 Logic and Temporal Monitoring Fault

C39A105 · Watchpoint fault: RAM-test task timeout

Universal Robots · CB3 and Earlier Models

C39 Logic and Temporal Monitoring Fault

C39A106 · Watchpoint fault: CalVal-test task timeout

Universal Robots · CB3 and Earlier Models

C39 Logic and Temporal Monitoring Fault