Connect to a device using TELNET

Hi all

I'm again using LabVIEW afairly... I have only the subset of basic skills so far.  So I would respectfully when you reply to a catchall as possible please.  In fact, a sample project with a lot of explanation would be absolutely fantastic.

Essentially, I have a Kollmorgan AKD motor controller device (more precisely the model AKD - 00306-x) which controls a servo controller.  It uses the TELNET Protocol, among other things, to communicate with him.  So far, I was able to use the TELNET of MS and Kollmorgans workbench service to communicate with the device with great success.  Although the workshop of Kollmorgan is a good program, I am looking for more precise control.

Here's the question:

What is the best method of sending the commands mulitple like that of the TELNET Protocol (to where I can enter a command, have the Kollmorgan run, enter another command, run,... multiple iterations this... with out disconnecting)?  In other words, I want to be able to enter a few commands, one at a time, and the Kollmorgan executes each command after each time that the key has been affected (with them having to restart the application... because of the disconnection).  So far, I've implemented a while loop (without success) and one for the loops (with no success).

With the involvement of a loop, I can send a command and carry out very well... the connection becomes just disturbed/disconnected.  My working model of the program, out of the loop is attached.  You will find that it does what an execution (using the "run once").  If you use the button "Continuous run", the buffer is literally invaded (which probably you know).

Thanks in advance.

You have 2 problems:

  1. Do not connect a value to the N of a loop terminal for and auto-index at the same time. One or the other. In your case, you're automatic indexing. Remove the 9 constant.

  2. Your strings are not correct. If you want to enter special characters such as newline and carriage returns, your string must be in '-' display mode. Otherwise get them interpreted exactly as you enter them. You send your channel, then the character "-" and the character "n". This is not the same thing as the newline character. Right-click on the string element, and then select this mode on the shortcut menu. You will see there are two characters "\" before the "n" and the characters 'r '. Change all the double-backslashes to those unique.

Tags: NI Software

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