Controlling two FANUC robots with using Sync External Axes

albert98 · (This post was last modified: 10-19-2025, 10:24 PM by Albert.)

Do I need to create a TP program for both robots? How will they communicate then? Do I need to implement some flag? Because TP program will be executed only on the robot it is placed upon, am I right? I have never done the communication between two robots using RoboDK. Can you give me some more info? Thank you.

**Albert** · 10-19-2025, 10:26 PM

You can find an example that synchronizes here different robots here:
https://robodk.com/example/Synchronizati...A-KR-210-2

You need a different TCP for each robot, even if they match exactly.

albert98 · 10-21-2025, 12:41 PM

Hello, so I managed to start my FANUCs synchronously, but now they are always in a mismatch of 2-5 mm. One is late or is too fast. Do you know how to solve this problem?

**Albert** · (This post was last modified: 10-23-2025, 01:20 PM by Albert.)

Are both robots programmed at the same speed?

I would suggest asking Fanuc for a solution to have both robots perfectly synchronized.