Configuring Hardware and Communication Connections STEP 7.pdf

11.8 Networking Stations from Different Projects
Introduction
Networking Stations
In complex networked systems, it may be advantageous to manage the stations in
more than project.
As of STEP 7 V5.2, you can configure several projects by using a multiproject. This
procedure is recommended for new projects.
In the figure below, a networked system is divided into two system parts (projects)
"Manuf1" and "Manuf2."
Without a multiproject, the following problem arises: for the project "Manuf1,"
stations that were configured in the project "Manuf2" are unknown.
Configuring Without a Multiproject
• You must insert the symbol "Other Station" in the project "Manuf1" to represent
a station in the project "Manuf2." The "Other Station" as a "stand-in object" is
restricted to the properties that are relevant for the network view.
• You must program the subnet to which both parts of the system are connected
twice in identical form: once in the project "Manuf1" and once in the project
"Manuf2."
The responsibility for the consistency of the network data in the different projects
lies with you in this case; STEP 7 cannot ensure consistency "beyond project
boundaries."
Configuring Hardware and Communication Connections with STEP 7
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