No Communication?
- Verify RS232/RS485 wiring matches pinout
- Check baud rate, parity, and communication settings
- Confirm correct station/unit address
- Ensure controller and actuator are powered
- Verify correct driver and port selection
Connection Established but No Response?
- Confirm correct command format and addressing
- Verify controller mode is active (not idle or faulted)
- Check communication timing settings
- Ensure correct model and protocol selection
Incorrect or No Movement?
- Verify position and command values are valid
- Check servo enable status
- Confirm motion commands are being issued correctly
- Ensure actuator is not in alarm or safety stop
Alarm or Fault Condition?
- Check controller error codes
- Verify limit switches or safety inputs
- Inspect mechanical load or obstruction
- Reset alarm and reinitialize system
Position or Accuracy Issues?
- Verify calibration and home position
- Check scaling and unit configuration
- Inspect mechanical alignment
- Confirm encoder or feedback system operation
Intermittent Operation?
- Check cables and connectors for loose contacts
- Verify stable power supply
- Inspect for electrical noise or interference
- Confirm grounding and shielding
Read Works but Write Fails?
- Verify write-enabled parameters
- Check command syntax and value ranges
- Confirm controller is not in protected mode
- Validate timing between commands
Device Not Responding Properly?
- Restart controller and communication interface
- Reinitialize parameters
- Verify firmware and configuration
- Test using minimal setup
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