During the operation of the OTC DAIHEN Welding Robot, if the system experiences abnormalities such as axis movement amount overtravel, conveyor belt synchronization invalid, system file access denied, or program queue execution exception, the teach pendant will usually display a control-level alarm in the 2173 to 2203 range.
To help on-site engineers quickly locate problems, we have organized the diagnostic terminology from the maintenance manual to provide you with the following fault quick reference table. We recommend using the search function, entering the error code (e.g., 2173), to accurately obtain troubleshooting suggestions.
I. OTC Robot Alarm Code Real-Time Quick Reference Table (2173-2203)
| Alarm Code | Fault Phenomenon | Fault Cause Analysis | Countermeasures & Solutions |
|---|---|---|---|
| 2173 | Movement Amount Overtravel | Occurs when attempting to move beyond the movement limit value. | Reset the movement limit value before operating. |
| 2174 | Function Cannot Be Used During Conveyor Belt Synchronization | Used a function that cannot be used during conveyor belt synchronization. | Record this function in a step other than conveyor belt synchronization. |
| 2175 | File Path Not Found | The system cannot find the specified path. | Confirm whether the file path is correct. |
| 2176 | File Access Denied | Cannot access because another process is using this file. | Please try again; if ineffective, please turn on the control device again. |
| 2181 | Conveyor Belt Run Signal Not Received | In general conveyor belt mode, the conveyor belt run signal was not received. | Set the conveyor belt run signal to ON; or set it to ignore in the constant menu. |
| 2185 | Step Number Incorrect | The step number exceeds 9999. | Reassign the number. |
| 2194 | Program Not Recorded or Not Selected | Attempted to start an unrecorded program. | Record the program first or select another program before starting. |
| 2201 | Queue Start and End Specification Incorrect | Detected when the queue start and end are not correctly paired. | Confirm the robot program, no special release is required. |
| 2202 | Exceeded Simultaneously Executable Queue Number (32) | Detected when executing more than 32 queues at the same time. | End intermediate queues that do not need to be executed. |
| 2203 | Queue Data Exception | Failed to calculate the movement amount from the queue data. | Confirm the queue data, no special release is required. |
II. Get Professional Technical Support and Maintenance Services
If the robot displays a hardware-level alarm and routine reset attempts are ineffective, do not forcefully operate the arm or repeatedly force restarts, so as not to cause secondary damage.
Contact Anhui Oujie for Technical Guidance
- System Repair Consultation: Manager Fang
- Service Hotline (WhatsApp): 180-9663-1656
- Official Email: ahojotc@gmail.com


