OPC-Interface NAV <<>> OPC server: "The RPC-server is unavailable"

SimonHouse1987

Hello together

with the classes of QuickOPC-software I have to send and receive information of sales orders between NAV2009R2 and an OPC server.

The information of sales orders are collected in a buffer table and should be transferred to the OPC server by NAS with the help of a codeunit. Lots of configuration in different areas has been done and I can transfer data to and receive data from the OPC server successfully if I start the codeunit manually.

If I start the NAS service, the codeunit runs but writes the following error to the protocol:

“The call to member ReadItemValue failed. OpcLabs.EasyOpcRaw.DataAccess.RawEasyDAClient returned the following message:
The RPC-server is unavailable.”

Does somebody has an idea which configuration isn't correct or is missing.

Thanks a lot,
Simon

archer89

check if the service account with which you run the nas has access to the opc server

SimonHouse1987

The service account is the same account like the login with which I tested the connection manually, to run the codeunit manually works fine, so I think the account has access to opc server.

vaprog

Did you test this on the same server, the NAS runs on?

OpcLabs is of type Automation, right?

SimonHouse1987

Yes, type Automation.

I tested the manual transfer on the same computer on which the NAS is running on! Also the account is the same.