Siemens 61001 alarm: Cycle: poorly defined thread pitch

The Siemens cycle detects incorrect thread pitch before its execution. It is an alarm from the Program area, and in the catalog it is listed as “Cycle: poorly defined thread pitch”. On the machine you notice it like this: Falla en ciclo de roscado, Cycle block message, May occur after an incorrect post.

On the shop floor it almost always comes from one of these causes: Pitch missing or zero, Signo incorrecto, Unidades inconsistentes, Poorly defined cycle parameter. Rule out the most likely one on your machine first, before touching parameters or swapping anything.

Reset tras corregir paso/ciclo. Resetting without fixing the cause first only hides the problem: Siemens 61001 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: Review threading cycle parameters, Confirm units, Simular antes de ejecutar. That alone will tell you whether it is the program or whether you need to raise a maintenance job.

With Siemens 61001 active, avoid this: Do not start threading cycle without verifying the step, Do not change address without knowing. Skipping any of these points is what turns a minor stop into an expensive breakdown.

Normally requires no maintenance. 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.