Siemens 700xxx alarm: User Alarm/OEM PLC

Typical range of alarms generated by the machine manufacturer's PLC logic. It is an alarm from the PLC/machine area, and in the catalog it is listed as “User Alarm/OEM PLC”. On the machine you notice it like this: Machine specific text, It can refer to jaw, door, pressure, robot or peripheral, The number alone is not enough.

On the shop floor it almost always comes from one of these causes: PLC input condition not met, Secuencia incompleta, Sensor or peripheral in incorrect condition. Rule out the most likely one on your machine first, before touching parameters or swapping anything.

Reset after meeting the indicated PLC condition. Resetting without fixing the cause first only hides the problem: Siemens 700xxx 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: Leer texto completo, Go to PLC/I-O diagnostics, Verify indicated physical condition. That alone will tell you whether it is the program or whether you need to raise a maintenance job.

With Siemens 700xxx 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 signal is not identified or involves security/automatic peripherals. 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.