KUKA Error 1026 — ERROR READING DIGITAL INPUT PORT **
ErrorDisplayed as KSS01026 on KRC4 / KRC5 controllers
KUKA 1026 (“ERROR READING DIGITAL INPUT PORT **”): Fault in the I/O hardware. First check: Check the corresponding I/O components.
Updated 2026-09-09 · LogrobotLM reference
Cause
Fault in the I/O hardware.
Effect
Path-maintaining stop.
Troubleshooting
Check the corresponding I/O components.
Related codes
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 →