330-0016

Access PLC program

Press MOD key, select 'PLC', then 'Program'. Navigate to the spindle handling section (typically marked with comments like 'SPINDLE CC2' or 'S2 ENABLE').

Look for marker names like M_CC2_ENABLE (output) and I_CC2_RDY (input) - the naming convention varies by machine builder but follows this pattern.

Check enable-to-ready logic

Verify that the output enable signal to CC%2 is set TRUE before checking the ready input, and that ready monitoring doesn't begin until after enable is commanded. There should be a delay or state machine handling the transition.

Do not modify PLC logic without backing up the current program via MOD > PLC > Backup.

Monitor PLC markers in real-time

Go to MOD > PLC > Status. Filter for CC2 or spindle-related markers. Perform an E-STOP reset and observe the sequence: enable output should go high, then after a brief delay (typically 100-500ms), ready input should go high.

Use the 'Trace' function in PLC Status to capture the exact timing of signal transitions - this reveals race conditions.

Correct the PLC logic

If the sequence is incorrect, modify the PLC program to add proper state management or timer delays. Typical fix involves adding a T (timer) element between enable output and ready monitoring, or implementing a state machine with WAIT conditions.

Test PLC changes in single-step mode first (MOD > PLC > Test mode) before running in automatic.

Access CC configuration parameters

Press MOD, select 'Machine Parameters', then navigate to 'CfgDrive' section. Locate parameters for CC channel 2 (typically numbered 1xx2 or 2xxx range depending on TNC model).

Parameter changes require machine manufacturer password (KEY2 or KEY3 level). Do not proceed without authorization.

Verify inverter type setting

Check parameter CfgDrive/driveType[2] matches the actual CC inverter module installed. Common values: 2=CC610, 3=CC612, 4=CC614. Incorrect setting causes wrong signal interpretation.

The module type is printed on the CC faceplate - physically verify against the parameter value.

Check channel assignment

Verify CfgChannel parameters assign the correct spindle axis (S) to CC%2. Look for parameters like CfgChannel/axisAssignment or channelNumber. Mismatch causes ready signals to be evaluated against wrong axis.

On multi-spindle machines, this is a common error after hardware replacements - always verify channel-to-spindle mapping.

Review timing parameters

Check parameters like CfgDrive/readyDelay[2] or driveEnableDelay[2]. These define expected timing for RDY signal transitions. If set too short, premature RDY=1 triggers this alarm. Typical values: 200-500ms.

After changing timing parameters, perform a full power cycle (not just NC reset) for changes to take effect properly.

Visual connector inspection

Power down the machine completely. Remove and inspect X118 and X122 connectors on the CC module. Look for bent pins, corrosion, or foreign material. Clean with contact cleaner if necessary.

Disconnect main power and wait 5 minutes for DC bus capacitors to discharge before touching any CC module connections.