6000

Access Program Manager

Navigate to HMI → Program Manager → Workpiece directory to view available NC programs.

Use softkey 'Directory' to switch between different program storage locations

Select Valid NC Program

Highlight desired program file (.MPF extension) and press 'Select' softkey to load into active channel buffer.

Ensure program syntax is valid before selection to avoid subsequent alarms

Verify Program Loading

Check HMI status line shows selected program name and verify program content displays in editor window.

Program name should appear in channel status area of HMI

Execute Cycle Start

Press NC START button or cycle start softkey to begin program execution with loaded program.

Ensure machine is in proper operating mode and all safety conditions are met

Check Reset History

Navigate to Diagnostics → Alarms → Alarm Log to verify recent NCK reset or power interruption events.

Look for alarm 1000-series entries indicating system resets

Verify Channel Status

Check HMI channel status display shows 'No program selected' or empty program name field.

Do not attempt cycle start until program is properly reloaded

Reload Previous Program

Access Program Manager and reselect the previously running program from workpiece directory or recent programs list.

Use 'Last used programs' softkey for quick access to recently executed files

Restore Program Position

If resuming interrupted program, use 'Search' function to position program pointer to correct block number.

Verify tool and workpiece positions before resuming mid-program

Check PLC Program Interface

Navigate to Diagnostics → PLC → I/O Status and verify DB21 (program selection data block) contains valid program name.

Program name in DB21 must exactly match filename including case sensitivity

Verify PLC Selection Signals

Monitor PLC interface signals for program selection handshake between PLC and NCK using HMI PLC status screen.

Incorrect PLC timing can cause selection failures

Test Manual Program Selection

Temporarily select program manually via HMI to verify program exists and is accessible in specified directory.

Check MD18080 (program path) settings if programs not found

Reset PLC Selection Sequence

Clear PLC program selection bits and reinitiate selection sequence through PLC control logic.

Coordinate with PLC programmer to avoid interference with automatic operation

Check DNC Connection Status

Navigate to Commissioning → Communication → DNC and verify connection status shows 'Connected' to DNC server.

Check MD20110 (DNC enable) is set to 1 for DNC operation

Verify Network Communication

Test network connectivity using HMI network diagnostics or ping DNC server IP address from NCU.

Network timeouts can cause incomplete program transfers

Check DNC Protocol Settings

Verify DNC protocol parameters MD20100-MD20150 match DNC server configuration for proper communication.

Common issue is mismatch in MD20120 (DNC protocol type) settings

Restart DNC Service

Reset DNC communication by toggling MD20110 from 1 to 0 and back to 1, then reinitiate program transfer.

Coordinate DNC restart with production schedule to minimize downtime

Verify Program Syntax

Open program in HMI editor and check for syntax errors, missing program end (M30), or invalid G-code commands.

Use 'Check program' softkey to validate syntax before selection

Check File Integrity

Compare file size and modification date with known good backup copy to identify potential corruption.

Corrupted files may cause system instability beyond just selection failures

Restore from Backup

Replace corrupted program with verified backup copy from archive directory or external storage device.

Always maintain backup copies of critical production programs

Test Program Loading

Attempt to select restored program and verify successful loading into channel buffer before production use.

Run program in simulation mode first to verify complete restoration