Posts made by Jonzy

Hi all,

I have an interesting problem with the Duet2.

I want to slowly move the z-axis down and then call a macro. The macro moves the Y axis back and forth several times very fast.
In my sequence I communicate with the Duet board via Telnet. If I call the macro after I slowly move down, the Y axis will also move slowly, although the speed is set in the macro.
If I call the macro from the web interface, it works.
If I call the macro via Telnet again, it will move slowly again.

What is the reason for this? Are there two different speeds for Telnet and HTTP?

Many thanks.

Jonzy

For me, the Duet Board is not a "3D prtinter board", it is a very gerat stepper driver board. I do not want to use the board to control a printer.
For control tasks I need as high a performance as possible and a dead time through communication is very bad. That's why I asked about another communication instead of HTTP.

I will program a Telnet interface for my task. According to my measurements, it's twice as fast.

Oh no I'm so sorry - I did a big mistake in the time measurement.

The time to transfer 500 status cmds are:
HTTP: 5650 ms / 500 = 11,3 ms per status cmd
Telnet: 3453 ms / 500 = 6,9 ms per status cmd

This is a very high difference!

It's about the performance of the Board and not about the physical data transportation. I want to skip the iterpreter in HTTP.

I measured the duration of 500 status commands with Telnet and HTTP, 20 times each.
The mean results are
HTTP: 176 ms (Min.: 177, Max.: 205)
Telnet: 154 ms (Min.: 158, Max.: 178)

The difference is less than I expected.

For me, the topic is settled. Thank you for the quick answeres.

Thank you for the replies.

Telnet/SSH is no longer up to date but i guess it's faster than HTTP.
What I hoped for was a connection like with a server (Get connected with IP and PORT)

I make some tests about the communication time and wil inform you about my results.

Hi,
I am using the Duet 2 Ethernet. Does the board provide a direct TCP connection to bypass HTTP ?

Many thanks.
Jonzy