70014

Verify the programmed axis position in the NC block. Check the G-code or part program for the offending axis movement that triggered the alarm. Use the Siemens HMI Diagnostics menu to identify the exact block number and axis angle value.

Access Machine Data via Siemens Operate > Maintenance > Machine Data and navigate to MD 62128 (negative angle limit) and MD 62129 (positive angle limit). Verify these values match your mechanical design specifications for the rotary guide travel range.

Changing these parameters without physical verification of mechanical stops can cause collision damage.

Recalculate the part program to ensure all axis positions remain within the safe window defined by MD 62128 and MD 62129. Apply offset or rotation compensation in the NC block if necessary to keep moves within limits.

Reference the original machine commissioning documentation and mechanical drawings to confirm the correct angle limits for the rotary linear guide axis. Identify which axis (X, Y, Z, or rotary) is affected in the alarm message.

In Siemens HMI, navigate to Maintenance > Machine Data and edit MD 62128 (lower limit) and MD 62129 (upper limit) for the affected axis. Verify units are in degrees and match the mechanical specification exactly.

Soft limits must be set 5-10 degrees below the actual mechanical hard stops to prevent collision on position overshoot.

Perform a machine test cycle with INCH or jog mode to verify the new limits allow full intended travel. Monitor actual axis angle feedback in the Diagnostics > Actual Values screen during manual moves.

Access Siemens HMI Diagnostics > Actual Values and note the current angle position for the affected axis when the machine is at mechanical home. Compare this to the expected zero or reference angle.

Perform a full axis homing/referencing cycle using the machine's HOME function (typically via HMI or G27/G28 in NC). This resets the axis position to the mechanical reference point and recalibrates encoder feedback relative to MD 20090 (axis offset).

Ensure the axis can move freely and all hard stops are properly positioned before running home routine.

Re-run the part program or problematic NC block. If alarm 70014 no longer occurs, the issue was calibration drift. Document the axis offset correction for future preventive maintenance.