320-0059

Access BUS Diagnosis

Navigate to MOD function → System Info → BUS diagnosis to identify which operand range is affected and causing the conflict.

Document the specific operand addresses shown in the diagnosis before making changes

Check PLC Configuration

Go to MOD function → Machine Parameters → PLC and verify the PLC memory allocation parameters match the IOC requirements.

Never modify PLC parameters without proper backup and understanding of machine functionality

Verify IOC Settings

Access MOD function → System Configuration → IOC Config and cross-reference the operand addresses with available PLC memory ranges.

Use the TNC's built-in configuration comparison tool to identify discrepancies

Synchronize Configurations

Either update the IOC configuration to use valid operand addresses or expand the PLC memory allocation to accommodate the required addresses.

Identify Backup Source

Check the backup file properties and compare TNC software versions between source and target systems using MOD function → System Info → Version.

Always verify software compatibility before restoring backups across different TNC versions

Review Configuration Differences

Use MOD function → Backup/Restore → Compare function to identify specific parameter differences between backup and current system.

Document all differences before making corrections to avoid losing critical machine-specific settings

Selective Configuration Restore

Instead of full restore, selectively import only compatible configuration sections, avoiding PLC and IOC conflicts.

Restore user programs and tool tables separately from system configurations

Rebuild IOC Configuration

Manually recreate the IOC configuration using the current system's PLC memory map as reference.

Calculate Required Memory

Analyze the IOC configuration to determine the highest operand addresses used and calculate minimum required PLC memory allocation.

Add 20% buffer to calculated memory requirements for future expansion

Modify PLC Parameters

Access MOD function → Machine Parameters → PLC and increase memory allocation parameters for affected operand types (M, I, O, etc.).

Increasing PLC memory requires system restart and may affect cycle times

Verify Memory Allocation

After parameter changes, use MOD function → System Info → Memory to confirm adequate PLC memory is available.

Monitor memory usage over time to ensure stable operation

Test System Functionality

Perform complete I/O test and verify all configured operands respond correctly after memory reallocation.

Review IOC Address Format

Check MOD function → System Configuration → IOC Config for proper operand syntax (M1.0-M999.7 for markers, I0.0-I127.7 for inputs, etc.).

Use the TNC's address validation feature to check syntax before saving configurations

Validate Address Ranges

Cross-reference all operand addresses against the TNC system's maximum allowable ranges for each operand type.

Address ranges vary between TNC models - verify limits for your specific system

Correct Invalid Addresses

Modify any out-of-range or incorrectly formatted operand addresses to conform to valid TNC addressing standards.

Use sequential addressing starting from lower numbers to optimize PLC scan times

Validate Configuration

Use the TNC's built-in configuration validator to ensure all operand addresses are properly formatted and within valid ranges.