Mitsubishi P10 alarm: Program error: division by zero/overflow

Mitsubishi/MELDAS detects invalid mathematical operation in macro or cycle. It is an alarm from the Program area, and in the catalog it is listed as “Program error: division by zero/overflow”. On the machine you notice it like this: Falla en macro/ciclo, Bloque concreto, Appears with uninitialised variables.

On the shop floor it almost always comes from one of these causes: Division by zero, Variable with no value, Result out of range, Impossible geometry. Rule out the most likely one on your machine first, before touching parameters or swapping anything.

Reset after correcting program. Resetting without fixing the cause first only hides the problem: Mitsubishi P10 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: Revisar macro/ciclo, Check denominators and variables, Simulate after correcting. That alone will tell you whether it is the program or whether you need to raise a maintenance job.

With Mitsubishi P10 active, avoid this: Do not machine with a doubtful macro, Do not delete the checks. Skipping any of these points is what turns a minor stop into an expensive breakdown.

If it affects OEM macros. 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.