235-00AA

Access MOD function

Switch the mode selector to MOD position. Navigate to 'System Parameters' and access the machine parameter editor. You need appropriate access level (typically OEM password required).

Modifying drive configuration parameters requires machine shutdown and may affect all axes. Document current settings before making changes.

Review MP7200 drive configuration

Examine MP7200 (drive system configuration), MP7210 (number of configured axes/spindles), and subsequent parameters that define which inverter modules are expected at which positions on the DRIVE bus.

Write down the current MP7200 series values and physically verify each inverter module type and position in the cabinet. Module labels show type (UM1xx or UM2xx series).

Check detected hardware in diagnostics

In MOD mode, navigate to 'Diagnosis' → 'Drive System' → 'Hardware Configuration' to view what the control actually detected on the DRIVE bus. Compare this against the MP7200 series parameters.

The diagnostic screen shows inverter serial numbers and firmware versions. Mismatches in module count or type will be immediately visible here.

Correct configuration parameters

Update MP7200 series parameters to match the physically installed hardware. If you replaced a drive module, ensure the replacement is the same type or update the corresponding MP72xx parameter for that drive position.

After changing drive configuration parameters, a full power cycle (not just control restart) is required for changes to take effect.

Verify axis assignments

Check MP7500-MP7599 to ensure each axis is assigned to the correct drive module number. MP7501 assigns axis X, MP7502 assigns axis Y, etc. The drive number must correspond to a valid configured inverter in MP7200 series.

On multi-axis machines, drawing a simple diagram of axis-to-drive-to-physical-location mapping before troubleshooting saves time.

Inspect DRIVE communication cables

Check all fiber optic or communication cables between the TNC control's DRIVE interface and the inverter modules. Look for bent fiber cables, loose X50/X51 connectors, or damaged cable shielding.

Do not look directly into fiber optic cable ends. Invisible laser light can cause eye damage.

Check DRIVE bus termination

Verify that the last inverter module in the DRIVE bus chain has proper termination installed. Incorrect termination causes communication errors and module detection failures.

On UM2xx modules, termination is typically a small switch or jumper. Consult the inverter module documentation for your specific model.

Review diagnostic communication counters

In MOD mode, navigate to 'Diagnosis' → 'Drive System' → 'Communication Status' to check for communication errors, timeout counters, or CRC errors on the DRIVE bus.

If error counters are incrementing, this confirms a communication problem rather than a configuration issue. Focus on physical connections and cable integrity.

Test with reduced configuration

If multiple inverters are present, temporarily disconnect all but the first inverter module and adjust MP7200 parameters accordingly. If the alarm clears, reconnect modules one at a time to identify the problematic unit or cable segment.

Only perform this test with machine power off. Always discharge high voltage DC bus capacitors before disconnecting inverter modules.

Verify loaded configuration file

In MOD mode, check 'System Parameters' → 'Configuration Files' to see which machine parameter file is currently active. Note the file name and date - it should match your machine's documentation.

Configuration files are typically named with machine serial numbers or model designations. A generic file name may indicate a wrong file was loaded.