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Control network, Control network -10 – Rockwell Automation 1757-SWKIT4000 ProcessLogix R400.0 Installation and Upgrade Guide User Manual

Page 262

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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