Snap B300 ENET Opto 22 Brain Communication Driver

[23r23]

Does anybody know how to communicate via ethernet (LAN) to a Snap B300 ENET Opto 22 Brain from Lookout?

[A.S.]

Hi,
You can use Lookout to talk to any Opto 22 device. Furthermore, Lookout can talk to these other Opto protocol devices:

OptoHostwords - Communicate with any device that uses the Opto22 Hostwords protocol.
OptoMistic - Communicate with any device that supports the Opto22 Mistic protocol using a serial link.
Optomux - Communicate with any device that supports the Optomux serial communications protocol, including the Opto 22 I/O.

Once you have created this object in Lookout, you can read and write to the register/data members like you would for any other object. For details on which register is mapped to which I/O point, you will need to look at the Opto 22 manual.

Hope this helps.

A.S.

[23r23]

All the Opto 22 driver objects allow serial communications. I did try before ask. How can I implement communications via ethernet with the B3000 Ethernet Brain?

[Khalid]

Hi,

As I see it, you have two options:

1. Use Opto22's OPC Server. Lookout being an OPC Client, this is the most straight-forward way. Opto22 is available for free download at:

http://www.opto22.com/products/software/opc_support.aspx

2. If for some reason you do not want to go the OPC route, you can try using the IPASCII object in Lookout. This will be a little more involved since you will have to implement the protocol yourself using the IPASCII object. Optomux being a simple protocol, this should however not be very difficult.

Of course, there's always the option of writing your own CBX using the Object Developer's toolkit.

Given that Opto22 has an OPC Server, National Instruments will very likely not add support for Ethernet
to their Opto objects.

Hope this helps.

Best regards,

Khalid