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.

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1,223 codes from Universal Robots · page 8 of 31

C174A10 · Wrist 2. Problem identified when executing program line {unsigned}.

Universal Robots · CB3 and Earlier Models

C174 Robot motion causes too high jump in joint torques

C174A11 · Wrist 3. Problem identified when executing program line {unsigned}.

Universal Robots · CB3 and Earlier Models

C174 Robot motion causes too high jump in joint torques

C185A1 · START_NORMAL_OPERATION is not allowed on selftest firmware

Universal Robots · CB3 and Earlier Models

C185

C185A2 · GOTO_BACKDRIVE_COMMAND is not allowed on selftest firmware

Universal Robots · CB3 and Earlier Models

C185

C186A1 · joint_mode == JOINT_RUNNING_MODE is not allowed on selftest firmware

Universal Robots · CB3 and Earlier Models

C186

C187A1 · Starting temperature were lower than expected

Universal Robots · CB3 and Earlier Models

C187 Temperature sensor test failed

C187A2 · Starting temperature were higher than expected

Universal Robots · CB3 and Earlier Models

C187 Temperature sensor test failed

C187A3 · Temperature increased less than expected during warm up

Universal Robots · CB3 and Earlier Models

C187 Temperature sensor test failed

C187A4 · Temperature increased more than expected during warm up

Universal Robots · CB3 and Earlier Models

C187 Temperature sensor test failed

C190A0 · Motor encoder index mark not found

Universal Robots · CB3 and Earlier Models

C190 Joint failed during selftest

C190A1 · Phases not mounted correctly

Universal Robots · CB3 and Earlier Models

C190 Joint failed during selftest

C190A2 · Motor encoder counting the wrong way

Universal Robots · CB3 and Earlier Models

C190 Joint failed during selftest

C190A3 · Joint encoder counting the wrong way

Universal Robots · CB3 and Earlier Models

C190 Joint failed during selftest

C190A4 · No movement detected while trying to move the motor

Universal Robots · CB3 and Earlier Models

C190 Joint failed during selftest

C190A11 · Temperature alignment did not warm up to 45 degrees C within 30 minutes

Universal Robots · CB3 and Earlier Models

C190 Joint failed during selftest

C190A12 · Temperature alignment did not cool down to 45 degrees C within 60 minutes

Universal Robots · CB3 and Earlier Models

C190 Joint failed during selftest

C191A1 · Joint position limit violated

Universal Robots · CB3 and Earlier Models

C191 Safety system violation

C191A2 · Joint speed limit violated

Universal Robots · CB3 and Earlier Models

C191 Safety system violation

C191A3 · TCP speed limit violated

Universal Robots · CB3 and Earlier Models

C191 Safety system violation

C191A4 · TCP position limit violated

Universal Robots · CB3 and Earlier Models

C191 Safety system violation

C191A5 · TCP orientation limit violated

Universal Robots · CB3 and Earlier Models

C191 Safety system violation

C191A6 · Power limit violated

Universal Robots · CB3 and Earlier Models

C191 Safety system violation

C191A7 · Joint torque window violated

Universal Robots · CB3 and Earlier Models

C191 Safety system violation

C191A8 · Joint torque window too large

Universal Robots · CB3 and Earlier Models

C191 Safety system violation

C191A9 · Reduced mode output violation

Universal Robots · CB3 and Earlier Models

C191 Safety system violation

C191A10 · Safeguard stop output violation

Universal Robots · CB3 and Earlier Models

C191 Safety system violation

C191A11 · Emergency stop output violation

Universal Robots · CB3 and Earlier Models

C191 Safety system violation

C191A12 · Momentum limit violation

Universal Robots · CB3 and Earlier Models

C191 Safety system violation

C191A13 · Robot moving output violation

Universal Robots · CB3 and Earlier Models

C191 Safety system violation

C191A14 · Robot is not braking in stop mode

Universal Robots · CB3 and Earlier Models

C191 Safety system violationCause given

C191A15 · Robot is moving in stop mode

Universal Robots · CB3 and Earlier Models

C191 Safety system violationCause given

C191A16 · Robot did not stop in time

Universal Robots · CB3 and Earlier Models

C191 Safety system violation

C191A17 · Received a null vector for TCP orientation

Universal Robots · CB3 and Earlier Models

C191 Safety system violation

C191A18 · Robot not stopping output violation

Universal Robots · CB3 and Earlier Models

C191 Safety system violation

C191A19 · Invalid safety IO configuration

Universal Robots · CB3 and Earlier Models

C191 Safety system violation

C191A20 · Configuration information or limit sets not received

Universal Robots · CB3 and Earlier Models

C191 Safety system violation

C191A21 · The other safety processor detected a violation

Universal Robots · CB3 and Earlier Models

C191 Safety system violation

C191A22 · Received unknown command from Controller

Universal Robots · CB3 and Earlier Models

C191 Safety system violation

C191A23 · Invalid setup of safety limits

Universal Robots · CB3 and Earlier Models

C191 Safety system violation

C191A24 · Reduced Mode Output set, while it should not be

Universal Robots · CB3 and Earlier Models

C191 Safety system violation

Universal Robots C174A10

Wrist 2. Problem identified when executing program line {unsigned}.

The directory gives no cause for this code; the maker’s notes on it are on page 41.

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.