Siemens 10700/10701 alarm: Protection zone violated

Sinumerik detects that the path enters an NCK or channel-specific protection zone. It is an alarm from the Safety area, and in the catalog it is listed as “Protection zone violated”. On the machine you notice it like this: Alarm in automatic/MDA, Trayectoria bloqueada, May involve a fixture, chuck or protected zone.

On the shop floor it almost always comes from one of these causes: Poorly defined active protection, Incorrect origin/tool, Program crosses prohibited zone, Kinematics/transformation. Rule out the most likely one on your machine first, before touching parameters or swapping anything.

Reset after correcting path or authorized configuration. Resetting without fixing the cause first only hides the problem: Siemens 10700/10701 trips again and, in the meantime, you keep working with the machine in bad shape.

With the machine stopped and in a safe state, start with these checks: Check protection zone, Check tool and offset, Simular trayectoria. That alone will tell you whether it is the program or whether you need to raise a maintenance job.

With Siemens 10700/10701 active, avoid this: Do not bypass safety devices, Do not manipulate energized electrical cabinet, Do not continue producing if the alarm reappears. Skipping any of these points is what turns a minor stop into an expensive breakdown.

If the protected zone was modified or its origin is unclear. If you are not sure how far it goes, stop the machine and report it: a repeat alarm always works out cheaper than a crash.

It is a stop alarm: the cycle will not continue until you fix the cause. It does not always mean serious damage, but it leaves the machine where it is and you have to check it before running again. Guidance reference. Always confirm the full text in the exact machine/control manual.