Control network, Control network -10 – Rockwell Automation 1757-SWKIT4000 ProcessLogix R400.0 Installation and Upgrade Guide User Manual
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Publication 1757-IN040B-EN-P - March 2002
11-10 Performance and Capacity Specifications
Control Network
ATTENTION
!
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.
Table 11.G Process Control Network Specifications
Supervisory Process Control Network
Network Media
Ethernet
ControlNet
Supervisory Networks per ProcessLogix Server
(1 PCIC card per Server)
Mixed Supervisory ControlNet & Ethernet on the same Server is
not supported.
1 non-redundant network
serviced by 1 redundant or
non-redundant Server
1 redundant or non-redundant
network serviced by 1 redundant
or non-redundant Server
Allowable Combinations of Controllers * per Server
Up to 10 Non-Redundant only
Up to 10 Redundant or
Non-Redundant in any
combination
Data Rate
10 Mbits/sec
5 Mbit/sec
Media Redundancy
Non-redundant only
Single cable or redundant media
operation supported.
*Controller Definitions including PLCs
Multiple 1757-PLX52s per chassis are NOT supported. However, a
non-redundant 1757-PLX52 can reside in the same chassis as a
Logix 5550.
Non-Redundant:
•
1 1757-PLX52
•
1 Logix5550
•
1 PLC5/C or E
•
1 SLC (Ethernet only)
Redundant:
•
2 1757-PLX52s in a Chassis
Pair with 2 1757-SRMs