User manual

Global Data (Publish/ Subscribe)
33002479 06 07/2008 189
Planning Your
System
Configuration
The Global Data (publish/subscribe) utility is a powerful function incorporated into
the NOE product line. Implementing Global Data requires a configuration that spans
many PLCs throughout the system. Therefore, we recommend pre-planning your
installation before implementation. Pre-planning saves time and money by:
z reducing errors, which circumvents a debugging effort
z ensuring system consistency
Go to paper before computer.
We offer the following table to assist in system planning. The Global Data Planning
Spreadsheet below is a graphic representation of a recommended configuration
table for system planning. You can create your own table using the format below or
you can download a Microsoft Excel
TM
spreadsheet template, which is available on
the Schneider public Web site.
Here is the graphic representation of the Global Data Planning Spreadsheet:
Table of Global Data Limits:
Parameter
Checking
Variable
ID
Symbol* Length
(Registers)
Device Number Variable
Public. Status
12...3
1 VALVE_STATUS 20 PUB SUB NONE OK
2 VALVE_CONTROL 10 SUB NONE PUB OK
...
64 PUMP_CONTROL 50 SUB PUB NONE OK
Device Publication Status: OK OK OK
Total Publication Size per Node: 20 50 10
Total Subscription Size per Node: 60 20 0
Group IP Address 239.255.255.0
Multicast Filtering
Enabled
OFF
Default %MW Address for
Health
%MW100
Distribution Period 10
Health Timeout 1000
Data Zone %MW200
*Entries or changes to the symbol (description) do NOT affect or change a variable or the system. The symbol used
in the Quantum product line has no relation to the Concept/Unity product line symbol(s).
Parameter Limit
Maximum number of publish variables per
device
1