Rockwell Automation 9301 Series RSView32 Users Guide - Manual (Page 57)

Setting up direct driver communications

2–17
Changing node information at runtime
To permanently change a node’s station number at runtime, use the
NodeSwitch command. This command allows you to set up node–
level redundancy. That is, if the programmable controller that a node
is pointing to fails, you can immediately switch to another
programmable controller.
NodeSwitch <node name> <station>
<node name> The name of the node that you want to change to
another programmable controller address.
<station> For device nodes, the physical address for the
programmable controller you want to change to.
When you use the NodeSwitch command to change a node’s address,
the change appears in the Node editor’s spreadsheet. If the Node
editor is open when you use the command, the change will not appear
until you have refreshed the display by closing and re–opening the
editor.
You can also enable and disable nodes at runtime, using the
NodeEnable and NodeDisable commands. For more information see
Appendix A, RSView32 commands.
Scanning for new tag values
When your RSView32 project is running, it must periodically update
its tag values in the value table. This is done by scanning.
For projects communicating through direct drivers, values are updated
by scanning the programmable controller address at the foreground
and background scan rates specified by the scan class.