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Old October 1st, 2022, 03:26 AM   #1
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1756-ENBT and Raw Sockets

I wanted to confirm with the Gurus that a 1756-ENBT can not create raw sockets. I'm using Rockwells Process Library's T_Sync to connect to an NTP server and I'm having connection errors as the module can not create or open the sockets. The messages are failing with function not supported. I can get the actual error in the morning.

This is a home setup, and in a few months, if the price is right on eBay, ill get a 1756-EN2T or EN2TR.
"We make the solutions up out of modules, so they're all standard, ... They're built for security, reliability, ease of expansion and ease of changing. They're the ideas we had many years ago that tend to get lost today." -Ken Olsen co-founded Digital Equipment Corporation (DEC)
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Old October 1st, 2022, 12:39 PM   #2
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As far as I understand only the 1756-EN2T(R), 1756-EN3T(R), 1756-EN4T(R) and the 1756-L8x ControlLogix cards support raw sockets. Same with the compactlogix, only the 5370 and 5380 range support raw sockets.
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Old October 1st, 2022, 03:51 PM   #3
Ken Roach
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You are correct that the 1756-ENET and 1756-ENBT do not support the "raw sockets" features.

The 1756-ENBT's hardware cousin is the 1756-EWEB; the -EWEB cant do I/O, but it can do ordinary messaging as well as Open Sockets and has an embedded webserver.

I have a surplus 1756-EWEB if you've got something fun to trade.
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Old October 2nd, 2022, 05:39 PM   #4
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Originally Posted by id10t_error View Post
This is a home setup...
I love that you have a 1756 Control Logix rack as a home setup you're living the life most of us can only dream of!
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