Rockwell Automation 1757-PROCESSLINX ProcessLinx OPC Server to Server Software User Manual - Manual (Page 25)

Publication 1757-UM002B-EN-P - January 2003
ProcessLinx TagMap Configuration 3-5
Enable
The enable checkbox enables or disables the Pipe and all of its children
(Groups and TagMaps) in runtime from communicating with each
other. Be certain to check this if you want the Pipe to run in runtime
mode, otherwise it will be disabled.
This is useful when multiple pipes are configured, and one for each of
several external servers, and at some point, one of the OPC servers or
remote system is brought down (for maintenance, for example) and you
don't want or need that pipe interfacing with the downed OPC Server.
In this case you would simply uncheck the enable checkbox for that
pipe. Otherwise, if left enabled, it may take away processing power from
the interfaces on the other pipes due to time-outs and DCOM
problems.
Status Validation
The Status Validation edit box specifies the interval for checking or
validating the OPC Server. ProcessLinx validates the status of the
primary and secondary external OPC servers at the rate specified by this
dialog. ProcessLinx uses this status to determine if a fail over to the
redundant ProcessLogix Server is required. It is specified in
milliseconds with a default of 5000.
IMPORTANT
If the OPC Server does not show up in the list, then it has
not been properly installed or registered on the machine.
Remote servers do not have to be installed on the local
node in order to connect with them. Their OPC Class
information (GUID, refer to Preparing the Client’s User
Accounts on page 1-3) needs to be registered on the local
machine. Consult the specific OPC Vendor for
documentation on how to register an external OPC Server
to run on a remote node.
If documentation is not provided, obtain a copy of the
executable of the external OPC Server and run it once on
the local machine. Most OPC Servers will register
themselves automatically when they are executed for the
first time.