A broken tool during Siemens 810M program execution creates two different recovery paths: preserve the active program position by avoiding RESET, or use BLOCK SEARCH after RESET. The available evidence does not identify compatible DNC software, communication settings, machine-builder interlocks, or an exact panel layout, so verify those items against the machine documentation before production use.
Choose the Recovery Path
| Control state | Supported recovery approach | Key constraint |
|---|---|---|
| RESET not pressed | Stop motion, replace and register the tool, return to AUTO, then continue from the retained program position. | Do not assume axis repositioning is automatically safe; observe the return motion closely. |
| RESET pressed | Use BLOCK SEARCH to select the required program block before restarting. | The evidence does not define how the 810M reconstructs spindle, tool, offset, or modal states during this search. |
The assertion that the control retains the stopped block without RESET comes from the described operating experience, but the source also expresses uncertainty about the exact 810M controls. Treat it as a workflow to validate on the specific machine, not as a universal guarantee.
Stop and Replace the Broken Tool Without RESET
- Stop axis feed with FEED STOP or the feed handwheel before the damaged tool reaches the workpiece.
- Select single-block operation to prevent uncontrolled progression through subsequent blocks.
- Stop tool rotation with SPINDLE STOP.
- Select manual operation and move the axes to a safe tool-change position.
- Remove the damaged tool manually or through MDI, as permitted by the machine.
- Install the replacement and enter its length and diameter data.
- Return the control to AUTO.
- Start the spindle, then press FEED START while monitoring every axis movement and the tool path.
FEED STOP and single-block operation serve different purposes: feed stop arrests commanded feed, while single block limits subsequent execution. Do not treat feed stop alone as equivalent to selecting single block.
Recover After RESET with BLOCK SEARCH
If RESET has already cleared the active execution position, use BLOCK SEARCH to locate the intended restart block. The evidence supplies no exact key sequence or screen procedure, and the machine-builder implementation may affect the available controls.
Before cycle start, verify the selected block, active tool, entered length and diameter data, spindle state, operating mode, and current axis positions. The evidence does not establish which prior modal commands BLOCK SEARCH restores, so do not infer that selecting a machining block alone reconstructs every required state.
Define and Verify the DNC Interface Separately
No DNC program, cable specification, port configuration, protocol, or transfer procedure is identified in the evidence. Select software only after confirming the 810M communication interface exposed by the specific machine and obtaining its required transfer settings from the machine or control documentation.
Validate recovery with no workpiece contact: confirm that the intended program position is retained without RESET, test BLOCK SEARCH behavior after RESET, and observe the first resumed moves at a controllable feed. Do not perform the first validation on a production part.
FAQ
How do I resume a Siemens 810M program after a tool breaks?
Use FEED STOP, select single block, stop the spindle, replace and register the tool without pressing RESET, then return to AUTO and restart under close observation.
What should I do if RESET was pressed on a Siemens 810M?
Use BLOCK SEARCH to select the required restart block, then verify the tool data, spindle state, operating mode, axis positions, and required modal conditions before starting.
Which DNC software and settings work with a Siemens 810M?
The available evidence identifies neither a DNC application nor communication settings. Confirm the machine's installed interface and documented transfer parameters before selecting software or a cable.