A-B driver problem, still unsolved

[mjrx]

From the Lookout help file for the AB_SLC500 object, the exact words are, second line down:

* Through the serial port via a KF2 module which converts serial DF1 to DH+

I have tried about every address combination I can think of. The station addresses on the KF2 are set by dip switches. Also there are several nodes on the network with pre-assigned addresses, so I can't assign duplicates.

So you are saying your OPC server will work for my app? Because the Kepware server WILL NOT work for my app. I have talked to them in detail, they said no way - I have several different protocols on the same serial port, with Kepware each channel needs its own port, you can't share the same serial port between different channels/protocols.

[Ryan.S]

Sorry, I didn't mean NI OPC Server work for your application. It works with the AB PLC, and the Modbus, but different drivers cannot share the same port, like kepserver. It may not be what you want.

The kepware needs two addresses when useing KF2, one is the plc address, another is the KF2 module address. But Lookout only has one parameter for plc address. I look into the souce code. It seems that the other address is hard-coded as 0. That's why I suggest you to try to set the KF2 address as 0 if possible. Can you do a simple test with KF2 at address 0? Input plc address 1 in Lookout.

I'm not sure if it will work, but it deserves a try.

I will also check the Lookout source code if we can get it improved or fixed.