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Check HSCI configuration parameters

Navigate to MOD function → Machine Parameters → Communication → Check MP7680 (HSCI configuration) and verify if HSCI is enabled when no CC is present.

Verify CC hardware connection

Inspect the physical connection between HSCI module and CC unit. Check X116 connector on HSCI board and corresponding CC interface cables.

Power down the control before checking hardware connections

Validate CC recognition

In Service menu → Communication → HSCI Status, verify that CC module is detected and shows 'Ready' status. Check MP7681 for CC identification parameters.

Reset communication parameters

If CC is connected but not recognized, reset MP7680-MP7689 communication parameters to default and reconfigure HSCI-CC topology.

Document current parameter values before resetting for potential rollback

Check CC module status LEDs

Examine CC module front panel LEDs. Green LED should be solid, red LED off. Flashing patterns indicate communication errors or module faults.

Verify CC power supply

Measure 24VDC supply to CC module at X101 connector. Check MP7685 (CC power monitoring) for any power-related error flags.

Use proper ESD protection when measuring voltages on communication modules

Test CC communication path

In Service → Communication → CC Diagnostics, run communication test between HSCI and CC. Check for timeout errors or data corruption.

Replace CC module if necessary

If diagnostics confirm CC failure, replace module and reconfigure MP7682 (CC module type) and MP7683 (CC firmware version) parameters.

Always update CC firmware to match TNC software version after module replacement

Review system communication topology

Check machine documentation to verify if CC is required for your specific HSCI Ethernet configuration. Some applications use direct HSCI without CC.

Disable HSCI if not required

If CC is not needed, set MP7680 (HSCI enable) to 0 and MP7681 (CC required) to 0. Restart control to apply changes.

Backup current parameters before making changes using PLC → Data backup function

Reconfigure for direct HSCI mode

Set MP7684 (HSCI mode) to direct Ethernet mode if bypassing CC. Adjust MP7686-MP7689 network parameters accordingly.

Validate new configuration

Test Ethernet connectivity through Service → Communication → Network test to ensure proper operation without CC dependency.

Run hardware detection sequence

Execute MOD → System → Hardware detection to refresh module inventory. This updates MP7680 and related HSCI detection parameters.

Check HSCI slot assignment

Verify HSCI module is in correct slot per machine documentation. Check MP128x series for slot configuration and module type recognition.

Configure CC requirement flag

Set MP7681 (CC required flag) based on actual system needs. If CC is mandatory for your configuration, ensure this parameter is set to 1.

Incorrect CC requirement settings can cause communication failures with external devices

Initialize HSCI-CC handshake

Restart control and monitor startup sequence in Service → System info → Startup log for successful HSCI-CC initialization messages.