Installation guide

Estimating Network Performance
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3.21.6 Consistency in Node Addressing
Use a consistent method for identifying node addresses. This will
facilitate development of your application program and make future
expansion easier to plan. For example, use addresses in the range
2 ... 19 to identify programmable controller nodes, addresses 20 ... 29
for bridges, and addresses in the 30’s for hostbased network adapters.
Using addresses 20 ... 24 for Bridge Plus devices, with addresses 2 ... 9
for controllers, allows you to use Implicit Addressing in your
application. Appendix B has examples of message routing using this
and other addressing methods.
Note that you can use the same networkaddress at both networkports
of a Bridge Plus. When using hotstandby controllers, remember the
address offset of 32 between the primary and standby unit. Avoid
duplicating addresses on the same network.
3.21.7 Remote Programming
Online programming of nodes while network data transactions are in
progress does not reduce the network’s data transfer rate. Devices
maintain program master and slave paths that are separate from their
data paths. Some programming commands, like the Search command,
do increase the scan time of controllers. When these commands are
being executed the data rate (registers per second for active MSTR
functions) may be reduced in the controller.
For security, the Memory Protect keyswitch on programming panels
should always be set to the ON position when programming is not in
progress.