KUKA Error 1218 — ACK SBX -- KCP INPUT NOT IN PLACE
ErrorDisplayed as KSS01218 on KRC4 / KRC5 controllers
KUKA 1218 (“ACK SBX -- KCP INPUT NOT IN PLACE”): The safety box signals a fault in the input section of the fixed input. First check: Acknowledge the message. Likely part: KCP (KCP teach pendant (KUKA Control Panel)).
Updated 2026-09-09 · LogrobotLM reference
Cause
The safety box signals a fault in the input section of the fixed input.
Effect
Stop via braking ramp. All active commands inhibited.
Troubleshooting
Acknowledge the message.
Part to check / replace
KUKA 1218 points to the hardware below — start here before ordering.
Tap a part for every code that points to it — and verify the exact variant for your controller before ordering.
Related codes
Same hardware involved
Indicative field information — the robot manufacturer's manual and safety procedures always prevail. Never bypass a safety device; apply lockout/tagout (LOTO) before any physical intervention. How this reference is built →