# FlexTrack IRT501 connected to IRB1520

**URL:** <https://tech-community.robotics.abb.com/t/flextrack-irt501-connected-to-irb1520/6915>\
**Category:** Robot Controller\
**Created:** [December 4, 2015, 12:04pm UTC](https://tech-community.robotics.abb.com/t/flextrack-irt501-connected-to-irb1520/6915 "2015-12-04T12:04:51Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![PhilippeRSA](https://avatars.discourse-cdn.com/v4/letter/p/f07891/32.png) [@PhilippeRSA](https://tech-community.robotics.abb.com/u/PhilippeRSA)\
**Post date:** [December 4, 2015, 12:04pm UTC](https://tech-community.robotics.abb.com/t/flextrack-irt501-connected-to-irb1520/6915/1 "2015-12-04T12:04:51Z")

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Hi All.  
I have a new IRB1520, with the new controllers.  
I also have an old FlexTrack IRT501 with the old TLseries motors.  
With the Flextrack I have an old slave computer (with LAN port etc)  
How can I connect the FlexTrack to the new controller, such that the controller can control the FlexTrack.