Error codes

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.

740 codes from Universal Robots · page 10 of 19

C297A18 · Joint type detected by processor A: {unsigned}.

Universal Robots · e-Series and Later Models

C297 Joint validationCause given

C297A19 · Joint type detected by processor B: {unsigned}.

Universal Robots · e-Series and Later Models

C297 Joint validationCause given

C298A0 · Tool is too close to the lower arm: {float_2_4} meter.

Universal Robots · e-Series and Later Models

C298 Hand protectionCause given

C299A0 · Communication error detected

Universal Robots · e-Series and Later Models

C299 Tool communicationCause given

C299A3 · RX framing error

Universal Robots · e-Series and Later Models

C299 Tool communicationCause given

C299A4 · RX Parity error

Universal Robots · e-Series and Later Models

C299 Tool communicationCause given

C301A0 · Critical error

Universal Robots · e-Series and Later Models

C301 Safety message monitorCause given

C302A1 · Invalid Robot Type {unsigned}

Universal Robots · e-Series and Later Models

C302 Tool Configuration

C303A0 · Critical error

Universal Robots · e-Series and Later Models

C303 System statusCause given

C303A6 · Reset caused by independent watchdog

Universal Robots · e-Series and Later Models

C303 System statusCause given

C304A0 · Critical error

Universal Robots · e-Series and Later Models

C304 Self monitoringCause given

C304A3 · Close to the gearbox shear limit. Encoders disagree {float} [rad] on the Joint position

Universal Robots · e-Series and Later Models

C304 Self monitoringCause given

C304A4 · Either the encoder was inappropriately mounted, or the gearbox is loose or broken. Difference between the encoders is {float} [rad].

Universal Robots · e-Series and Later Models

C304 Self monitoringCause given

C304A6 · Motor phase {unsigned}'s resistance is too high.

Universal Robots · e-Series and Later Models

C304 Self monitoring

C305A0 · Critical error

Universal Robots · e-Series and Later Models

C305 Robot Power ControlCause given

C305A1 · Power supply voltage too low

Universal Robots · e-Series and Later Models

C305 Robot Power Control

C305A2 · Robot cable not connected

Universal Robots · e-Series and Later Models

C305 Robot Power Control

C305A3 · Short circuit in Robot detected or the wrong Robot is connected to the Control Box.

Universal Robots · e-Series and Later Models

C305 Robot Power ControlCause given

C305A4 · Robot voltage rising slower than expected

Universal Robots · e-Series and Later Models

C305 Robot Power Control

C305A6 · Power supply voltage too high: {float} V

Universal Robots · e-Series and Later Models

C305 Robot Power Control

C305A8 · The Robot Voltage is too high ({float})V when powering on the Robot

Universal Robots · e-Series and Later Models

C305 Robot Power Control

C305A9 · The Power State was not OFF ({unsigned}) when trying to power on the Robot

Universal Robots · e-Series and Later Models

C305 Robot Power Control

C305A11 · The power to the robot arm was not removed fast enough after violation

Universal Robots · e-Series and Later Models

C305 Robot Power Control

C305A12 · Unexpected energy eater type

Universal Robots · e-Series and Later Models

C305 Robot Power ControlCause given

C306A0 · Critical error

Universal Robots · e-Series and Later Models

C306 JointCause given

C306A1 · Not stopping fast enough

Universal Robots · e-Series and Later Models

C306 JointCause given

C306A2 · Velocity failed to pass sanity check

Universal Robots · e-Series and Later Models

C306 Joint

C306A3 · Acceleration failed to pass sanity check

Universal Robots · e-Series and Later Models

C306 JointCause given

C306A9 · Joint moved more than allowable limit

Universal Robots · e-Series and Later Models

C306 JointCause given

C306A15 · Joint moved too far while it should be stationary

Universal Robots · e-Series and Later Models

C306 JointCause given

C306A16 · A timeout occured while in violation parking

Universal Robots · e-Series and Later Models

C306 JointCause given

C306A17 · The joint parking procedure violated max allowed execution time of {float} [ms].

Universal Robots · e-Series and Later Models

C306 JointCause given

C306A19 · Illegal state transition, the joint entered parking while motorcontrol was disabled.

Universal Robots · e-Series and Later Models

C306 JointCause given

C306A20 · Trying to power off from violation while motor control is enabled.

Universal Robots · e-Series and Later Models

C306 JointCause given

C306A21 · Unexpected joint type ({hex})

Universal Robots · e-Series and Later Models

C306 JointCause given

C306A22 · Trying to enter idle brake failure while motor control is enabled.

Universal Robots · e-Series and Later Models

C306 JointCause given

C306A24 · Motor unsupported by the Critical Fault brake handler

Universal Robots · e-Series and Later Models

C306 JointCause given

C309A0 · Critical error

Universal Robots · e-Series and Later Models

C309 Keep-AliveCause given

C309A1 · Message with wrong sequence received from SCB-uPA.

Universal Robots · e-Series and Later Models

C309 Keep-AliveCause given

C309A4 · Message with wrong sequence received from SCB-uPB.

Universal Robots · e-Series and Later Models

C309 Keep-Alive

Universal Robots C297A18

Joint type detected by processor A: {unsigned}.

What to do: p. 114 of Universal Robots’s directoryAll Universal Robots codes

MakerUniversal Robots

Applies toe-Series and Later Models

SectionC297 Joint validation

Page114

Cause, as the directory gives them

• Processor A has detected the joint type during a type mismatch

From Universal Robots’s own error code directory. The steps to fix it are the maker’s and are on the page linked above, not copied here.