Cannot adding/removing EN/ENO formal parameters

Hi engineers!

I was learning programming in Ladder language on PLCnext Engineer software when I encountered a problem. Unlike the functions in other programming software, I couldn't find the "EN/ENO behavior" (as shown in the first picture). I've searched the help section but still can't find it. May I ask how to make "Toggle EN/ENO" appear as shown below. Thanks very much!
![](https://scontent.fsgn2-1.fna.fbcdn.net/v/t1.15752-9/271043627_225754836288221_2163375901275916268_n.png?_nc_cat=105&ccb=1-5&_nc_sid=ae9488&_nc_ohc=Q25j3QX9oo0AX_GkCfN&_nc_ht=scontent.fsgn2-1.fna&oh=03_AVIZqKaIQ6iNtbC5tREcNcOjaHC1wLrVU75e14waKHdggw&oe=61FB7559)
![](https://scontent.fsgn2-4.fna.fbcdn.net/v/t1.15752-9/269767837_334842514929017_5043859763677024098_n.png?_nc_cat=109&ccb=1-5&_nc_sid=ae9488&_nc_ohc=vuaNpTAAtxwAX-Tarxb&_nc_ht=scontent.fsgn2-4.fna&oh=03_AVJcBSb14RrJ1C6zUs05mgskSZnguQ7pdO24A74lYgmBAg&oe=61F7AF4D)

Try rightclicking the block? If also not available there, you would probably have to connect it first to remove the error.

Short answer: The documentation is wrong. The EN/ENO feature is not included in the current version of PLCnext Engineer.

This feature is listed as "Next on the list" in the development roadmap:
https://www.plcnext.help/te/Features_and_roadmaps/Roadmaps.htm
... so we expect to see this feature in an upcoming version.

Dear tienanhpham9910,

If you Still Want to use.
This Feature is Available in PLC Next Engineer 2021.0.2

You can Use this Old Version for short while and Once New Version Luanch You can Convert directly...!

Regards
Harshid Agrawal

Thanks engineers!