KUKA Robot codes
KUKA RobotSystemBasic

KRC0195

KUKA Robot KRC0195 - ERROR DIGITAL INPUT READING PORT: **

ERROR DIGITAL INPUT READING PORT: **

This alarm indicates a communication or reading error on a specified digital input port of the KUKA KRC controller. The alarm occurs when the system fails to properly read or interpret the signal state from a digital input channel, typically due to hardware malfunction, signal integrity issues, or configuration problems. The ** represents the specific port number that is generating the error.

Common Causes

  • Loose or corroded connector pins on the digital input terminal block
  • Damaged or frayed input signal wiring causing intermittent connections
  • Input signal voltage outside acceptable range (not meeting 24VDC logic levels)
  • Defective digital input module or port hardware on the KRC control cabinet
  • Software configuration mismatch or incorrect port mapping in the controller configuration

Troubleshooting Steps

  1. 1Identify the specific port number from the alarm message and note which external device or sensor is connected to it
  2. 2Power off the robot controller and visually inspect the digital input connector for loose pins, corrosion, or physical damage
  3. 3Disconnect and reconnect the input signal cable firmly, ensuring proper seating of the connector
  4. 4Using a multimeter, verify the input signal voltage is stable at 24VDC when the source device is activated, and 0VDC when deactivated
  5. 5Check the KUKA KRC configuration files and I/O mapping to confirm the port assignment matches the hardware connection and application requirements
  6. 6If the voltage and connections are correct, perform a controller reset and re-initialize the digital input configuration; if the alarm persists, replace the digital input module or controller

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