Rockwell Automation 1757-SWKIT5100 ProcessLogix R510.0 Installation and Upgrade Guide - Manual (Page 248)

Publication 1757-IN510A-EN-P - October 2003
11-8 Performance and Capacity Specifications
Control Builder Considerations
Viewing the expanded Monitoring Tab Tree View of the same
1757-PLX52 Controller loaded with more than 500 total CMs, SCMs
and IOMs from more than one CB client simultaneously, will severely
affect the performance of the 1757-PLX52 Controller’s communication
capability, both to the Server and Peer-to-Peer.
Using multiple CB clients to load to multiple controllers
simultaneously actually increases the overall load time. Do not
employ this technique as a way to save time in loading a controller
with contents.
Database operations (load, delete, upload, update, etc.) initiated from
a CB client will affect the performance of applications that run on the
backup Server. Remote CB clients will also be affected by these
operations. For instance, a CB client will experience reduced
performance if another CB client is also connected to the same Server
and has requested a large database operation.
Control Builder supports multi-user functionality, however, it should
be noted that there are some operations that are restricted.
Specifically, if a load is carried out at the same time as database
modifications are in progress (including import, copy, delete), then
these operations may fail, displaying related error messages. Examples
of such errors include:
• Database Modification in Progress, Try Again Later
• Point Build Error
In extreme cases these errors may cause Control Builder to stop
functioning. If this happens, you should restart the Control Builder
and reload the server points to ensure that the changes take effect.
Data should not be affected.