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AMX Data Event, onerror

Frequently Asked Questions

Written by Will Fraser

Updated at February 4th, 2026

Table of Contents

Brand: Models: Question:   Answer:

Brand:

  • AMX

Models:

  • Netlinx

Question:  

What are the errors in NetLinx that are returned on the Data Event, ONERROR?


Answer:

Here is a listing of some of the ONERROR values for IP_CLIENT_CLOSE and IP_CLIENT OPEN:

Result (via ONERROR event):

2: General Failure

4: Unknown host

6: Connection refused

7: Connection timed out

8: Unknown connection error

9: Already closed

10: Binding error

11: Listening error

14: Local port already used

15: UDP socket already listening

16: Too many open sockets

These are listed in the NetLinx Programming Language Manual on pages 122 through 124.  You can also find other error messages that relate to specific functions listed in this section of the manual called "Keywords and Run-Time Library Functions."

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