Haas 101 alarm: Communication failure with Mocon

The Haas control detects communication or memory failure with the board/motion control. It is an alarm from the PLC/machine area, and in the catalog it is listed as “Communication failure with Mocon”. On the machine you notice it like this: Alarm when turned on, The servos may not enable, The machine is not ready.

On the shop floor it almost always comes from one of these causes: Placa Mocon/control de movimiento, Internal connection, Memory or board power, Electronic failure. Rule out the most likely one on your machine first, before touching parameters or swapping anything.

It is not usually resolved with reset if it is internal communication; requires diagnosis. Resetting without fixing the cause first only hides the problem: Haas 101 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: Anotar alarmas de arranque, Restart following normal procedure, Check if there are other power alarms. That alone will tell you whether it is the program or whether you need to raise a maintenance job.

With Haas 101 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 it persists after a normal restart. 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 critical: there is a real risk of damage to the machine, the tool or a person. Leave the machine stopped, do not keep resetting it to see if it goes away, and call maintenance before producing again. Guidance reference. Always confirm the full text in the exact machine/control manual.