KUKA Robot Programming Guide

KUKA robot programming involves writing structured programs using KRL (KUKA Robot Language) to control motion, IO, and automation logic. While simple applications can be taught manually, production systems rely on repeatable and maintainable code.

Typical use cases include:

• Palletizing and depalletizing
• Pick and place operations
• Machine tending
• Assembly and handling systems

KUKA programs are split into two main files:

• .SRC → motion and program logic
• .DAT → positions and variables

This separation allows programs to be reused while updating position data independently.

DEF MAIN()
  BAS(#INITMOV,0)

  $BASE = BASE_DATA[1]
  $TOOL = TOOL_DATA[1]

  PTP HOME
  LIN P1
  LIN P2

END

KUKA robots support different motion types depending on the application:

• PTP → fast joint movement
• LIN → straight-line motion
• C_DIS → blended motion for cycle time optimisation

Choosing the wrong motion type can lead to poor cycle time or positioning errors.

$VEL.CP = 0.5
$ACC.CP = 1.0
LIN P1 C_DIS
LIN P2 C_DIS

All robot motion is calculated relative to coordinate systems:

• BASE → defines the work area (pallet, conveyor, fixture)
• TOOL → defines the TCP of the gripper

$BASE = BASE_DATA[1]
$TOOL = TOOL_DATA[1]

Incorrect frame setup is one of the most common causes of positioning errors in real systems.

KRL uses structured loops to repeat actions. This is essential for palletizing and batch operations.

FOR i = 1 TO 10
  LIN P1
ENDFOR

In real systems, this expands into multi-dimensional loops handling rows, columns, and layers.

Palletizing is one of the most common KUKA applications, but also one of the most time-consuming to program manually.

Engineers must handle:

• X/Y position offsets
• Z layer stacking
• Different product sizes
• Approach and retreat paths
• Cycle time optimisation

This leads to repetitive and error-prone code structures.

Instead of manually writing palletizing programs, engineers can use a generator to automatically produce structured KRL code.

The KUKA palletizing generator allows you to:

• Configure pallet layouts
• Define product dimensions
• Automatically generate SRC and DAT files
• Reduce programming time from hours to minutes

This approach is especially useful for repeatable applications.

• KUKA KRL programming guide
• KRL examples
• Palletizing example