LOYTEC L-Proxy, User Manual

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L-Proxy User Manual 79 LOYTEC
Version 3.1 LOYTEC electronics GmbH
Start L-Proxy Configurator for node “Port x”
Section 7.9.1
Modify L-Proxy internal connections
Section 7.11
Download configuration to L-Proxy
Section 7.9.11
Other ports where the NV
interface has changed?
no
yes
START
Create Network Variables on Port x
Section 7.7
Make Network Variable Bindings
Upload configuration
Section 7.9.3
DONE
Figure 66: Work flow to modify an L-Proxy interface with LNS.
To change the network variable interface of Port x open the LNS network management tool
and create, delete or modify the dynamic input and output network variables (see Section
7.7). Then create the bindings for the updated dynamic NVs with the other nodes in the
network. This can be done independently by separate engineers in parallel.
At the end of all changes one engineer is designated to modify the internal connections in
the L-Proxy to adapt to the updated NV interface. This engineer starts the Configurator as a
plug-in on his designated
download port
(see Section 7.9.1) and uploads the current
configuration (see Section 7.9.3). This upload also synchronizes the updated dynamic
network variables. Then the connections can be modified (see Section 7.11). Finally, the
updated configuration needs to be downloaded into the L-Proxy again (see Section 7.9.11).
7.4.6 Change an Existing Configuration without LNS
The recommended way to change an existing static port interface in systems without LNS
is to add/delete external network variables. These network variables use polling to read
data from the network and send explicit updates to write data to the network. Since the
existing static NV interface is not changed by external NVs, no bindings are lost. Figure 67
shows the corresponding work flow.