During the operation of the OTC DAIHEN Welding Robot, if the system experiences abnormalities such as exceeding the multi-layer queue limit, conveyor belt synchronization invalid, register/variable error, or Dynalog function command exception, the teach pendant will usually display a control-level alarm in the 2204 to 2258 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., 2204), to accurately obtain troubleshooting suggestions.
I. OTC Robot Alarm Code Real-Time Quick Reference Table (2204-2258)
| Alarm Code | Fault Phenomenon | Fault Cause Analysis | Countermeasures & Solutions |
|---|---|---|---|
| 2204 | Exceeded Multi-Layer Queue Limit | Detected when trying to execute a multi-layer queue with more than 8 layers. | Confirm the robot program, no special release is required. |
| 2230 | Conveyor Belt Synchronization Invalid | Attempted to execute a function related to the conveyor belt when conveyor belt synchronization cannot be performed. | Enable conveyor belt synchronization, and then reset the exception. |
| 2250 | Step Data Exception | This error is detected when a value of an application command parameter that is not allowed is set. | Reset the correct parameter. |
| 2251 | Incorrect Register or Variable Number | When an incorrect register or variable number is used in the program. | Type the correct register or variable number, and then reset the exception. |
| 2252 | Failed to Read or Write Variable | An error occurred when continuously reading or writing a variable. | Confirm the number of the variable to be read or written, and then reset the exception. |
| 2253 | Function Command Parameter Out of Normal Range | An illegal parameter of the function command was found during regeneration operation. | Please calibrate the parameter. |
| 2254 | Dynalog Function Command Out of Normal Range | An illegal function command was found during regeneration operation. | Please set the correct function command again. |
| 2255 | Divided by 0 | A numerical value is divided by 0 in the robot language file. | Check the program. |
| 2256 | Executing Compilation, Cannot Regenerate | A regeneration command was input during the compilation process. | Please start after the compilation process is completed. |
| 2258 | Wrist Posture Outside Limit Range | Operated in a posture that exceeds the set limit range of the wrist posture. | Operate within the limit range, and then reset the exception. |
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


