# Read tcp speed in RS simulation

**URL:** <https://tech-community.robotics.abb.com/t/read-tcp-speed-in-rs-simulation/4938>\
**Category:** RobotStudio\
**Created:** [June 19, 2012, 9:10am UTC](https://tech-community.robotics.abb.com/t/read-tcp-speed-in-rs-simulation/4938 "2012-06-19T09:10:27Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Petjo](https://avatars.discourse-cdn.com/v4/letter/p/7bcc69/32.png) [@Petjo](https://tech-community.robotics.abb.com/u/Petjo)\
**Post date:** [June 19, 2012, 9:10am UTC](https://tech-community.robotics.abb.com/t/read-tcp-speed-in-rs-simulation/4938/1 "2012-06-19T09:10:27Z")

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Hi

I try to read the tcp speed in my program, but I don’t seem to get any values..

I configured system output “TCP Speed” to use “aoTcpSpd” on a virtual unit then I try to read the signal value in a background task but all uotput I get is “0”

TPWrite “tcpspeed:” um:=aoutput(aoTcpSpd);

Would be greatful for any suggestions..

/Peter

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**Author:** ![HossamElaarag](https://avatars.discourse-cdn.com/v4/letter/h/858c86/32.png) [@HossamElaarag](https://tech-community.robotics.abb.com/u/HossamElaarag)\
**Post date:** [June 9, 2020, 8:02am UTC](https://tech-community.robotics.abb.com/t/read-tcp-speed-in-rs-simulation/4938/2 "2020-06-09T08:02:43Z")

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Hello Peter, I am trying to do the same, Have you successed ? and what would it be the rapid instruction to read the tcp signal ?  
Thank you in advance for your reply