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Siemens alarm

21614 Hardware Limit Switch

An axis hit its hardware limit switch.

Stops the machineSiemens SINUMERIK 840D sl, 828D and 840D powerline

What it means

An axis hit its hardware limit switch.

Common causes

  • Software limits or reference lost
  • Limit switch damaged or dirty
  • Crash

What to check first

  1. Jog off the switch in the opposite direction
  2. Inspect the switch

Lock out the machine before reaching into it. Never bypass a door switch or interlock to clear an alarm.

When to call a repair tech

Call a tech if the switch is damaged or the machine passed its software limits.

Repair companies that work on Siemens

See all Siemens repair

Quick answers

What does Siemens alarm 21614 mean?

An axis hit its hardware limit switch.

What causes Siemens alarm 21614?

Software limits or reference lost. Limit switch damaged or dirty. Crash.

How do I fix Siemens alarm 21614?

Jog off the switch in the opposite direction. Inspect the switch. Call a tech if the switch is damaged or the machine passed its software limits.

Alarm numbers and text can differ by control model, software version and machine builder. This page is a starting point from people who have worked on these machines, not a replacement for your machine builder's manual.

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