UDP connection

[mash 0]

Does anyone have a simple example for download to see how to make a UDP connection ?

I want to make a connection to a NAS harddisk system for wake-on-LAN.

I used the UDP_open, UDP_send and UDP_close function blocks.

But UDP_open gives always the result NG with error code 1025. I can´t find the reason why it doesn´t works.

[Michael Walsh 268]

You should post your code, perhaps we can tell what the issue is.  

 

Here is a sample though:

socket services FB Example.cxp

[mash 0]

thanks for your reply

here is the (reduced) program

now only the "wake-on-LAN"-sequence is still inside

 

I tried to open an UDP connection with the internal ethernet card at the CPU, but the function block gives always the result NG with error code 1025.
What is the reason ? What is wrong ?
Made the test with unit number 1 (as used in the hardware config) and with 0 (in the manual I could read that the internal board needs a 0).
But always unable to open the UDP connection.

LP2100_32_20181113_UDP.cxp

Edited 14 Nov 2018 by mash

[Michael Walsh 268]

You have a couple of issues with your setup.  

1)  You point your UDP open function block at unit 0.  When I open your I/O table, I don't see a unit 0.  The built in EIP port is set to 1 and the CJ1W-EIP21 is set to unit 12.

2)  Number 1 does not really matter though because only the ETN21 module supports socket services.  I do not see an ETN21 in your I/O table.  See the chart below for details on socket services support by module:

 

[mash 0]

1) I already tried with &0 , &1 , &12 , but always with the same result

2) I see ! now I understand why it doesn´t works. Thanks for your support.

 

kind regards,

Michael Malsch

[mash 0]

ok, thank you for your support !

now I was able to use the function blocks for UDP open, send and close