Heidenhain TS battery low alarm: Change probe battery

The TNC warns that the battery of the wireless/infrared probe is below the minimum level. It is an alarm from the Encoder / measurement area, and in the catalog it is listed as “Change probe battery”. On the machine you notice it like this: Message at the end of the scanning cycle, Intermittent loss of probe signal, Appears at the start or end of a routine.

On the shop floor it almost always comes from one of these causes: Battery almost discharged, Incorrect or old battery, Cold reduces capacity. Rule out the most likely one on your machine first, before touching parameters or swapping anything.

Reset after changing battery. Resetting without fixing the cause first only hides the problem: Heidenhain TS battery low 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: Note battery reference, Change battery following manufacturer's procedure, Test empty probing cycle after change. That alone will tell you whether it is the program or whether you need to raise a maintenance job.

With Heidenhain TS battery low active, avoid this: Do not mix new and used batteries, Do not force the cycle with a weak signal. Skipping any of these points is what turns a minor stop into an expensive breakdown.

If the warning continues after the change or the probe does not communicate. 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 warning: the machine carries on, but it is flagging something that will get worse if you let it go. Deal with it between parts, not at the end of the shift. Guidance reference. Always confirm the full text in the exact machine/control manual.