# EGM ERROR 50452: External Motion Interface cyclic error

**URL:** <https://tech-community.robotics.abb.com/t/egm-error-50452-external-motion-interface-cyclic-error/9908>\
**Category:** UpFeed\
**Created:** [January 8, 2021, 8:08am UTC](https://tech-community.robotics.abb.com/t/egm-error-50452-external-motion-interface-cyclic-error/9908 "2021-01-08T08:08:54Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![mishoavramov](https://dub1.discourse-cdn.com/flex005/user_avatar/tech-community.robotics.abb.com/mishoavramov/32/4345_2.png) [@mishoavramov](https://tech-community.robotics.abb.com/u/mishoavramov)\
**Post date:** [January 8, 2021, 8:08am UTC](https://tech-community.robotics.abb.com/t/egm-error-50452-external-motion-interface-cyclic-error/9908/1 "2021-01-08T08:08:54Z")

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Dear Sirs,

We are trying to test EGM path correction function implemented by our  
Laser Vision camera.

Unfortunately we get:

EGM 50452: External Motion Interface cyclic error

When we send path correction messages of the type:

header {  
seqno: 1  
tm: 343434  
mtype: MSGTYPE\_PATH\_CORRECTION  
}  
pathCorr {  
pos {  
x: 0.0  
y: 0.0  
z: 0.0  
}  
age: 157  
}

pos.x is 0.0  
pos.y in the range -17.0 + -17.0 mm;  
pos.z in the range 50. -70. mm;

---

<div class="post-metadata">

**Author:** ![xerim](https://avatars.discourse-cdn.com/v4/letter/x/2bfe46/32.png) [@xerim](https://tech-community.robotics.abb.com/u/xerim)\
**Post date:** [January 8, 2021, 12:59pm UTC](https://tech-community.robotics.abb.com/t/egm-error-50452-external-motion-interface-cyclic-error/9908/2 "2021-01-08T12:59:40Z")

</div>

Do you have any other communication or sensor errors? In the manual, it describes probable causes for this error as:

“Communication with the External Motion Interface input source, for example a sensor or other device, has failed.”