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Home > Robotiq Products > Position reading from Robotiq 85-finger
gbartyzel

Hello!

In project we are using Robotiq 2F-85 alongside with ROS. Recently, I observed wired behaviour, in manual it is written that gripper is fully opened in 0, and fully closed in 255. However when I set 0 on rPR, the gPO is shwoing 3, and when rPR is set to 255, the 229 is shwoing  (doesn't matter if it is from ROS or Robotiq User Interface). I'm using original fingertips. And is this a normal behaviour or something is wrong with gripper?

Set up:
UR5 3.5.2
Robotiq 2F-85
ROS Kinetic

Thanks
Grzegorz
David_Levasseur

Hello @gabrtyzel, The encoder value 229 is the value for the fingers being completely closed in the parallel gripping mode. The encoder can go up to 255 but only while gripping in the encompassing mode.