![background image](http://html.mh-extra.com/html/carrier/39hxc/39hxc_manual_2561930034.webp)
4.4.5 - Checking the pLAN address
The pLAN address is displayed at the top of the main screen, in the centre. It is also possible to access parameter P720 in the
configuration parameters, so as to read the controller address on the pLAN.
When the system starts up, the pLAN may encounter a number of problems (board fault and terminal start-up) caused by incorrect
connections or if an incorrect address has been assigned. The state of the pLAN can be displayed in real time on a special mask in
order to identify which devices (controller or terminal) are correctly connected and addressed.
To display the special page, simultaneously press the
and buttons on any other network terminal for at least 10 seconds. After
the first 5 seconds, a page is displayed; after 5 more seconds, the following page appears:
Controllers
Terminals
Once on the screen, network addresses 1 to 32 are displayed. The small rectangles represent the terminals and the large rectangles,
the controllers. If symbols appear then disappear, the pLAN may be unstable or, more likely, two components share the same address.
The number after "Term" indicates the terminal address used. The example shows that the network is made up of
3 controllers with the addresses 1, 2, 25 and 4 terminals with the addresses 3, 4, 15 and 26. Once the page has been verified, turn
off the power, check the connections and addresses, then power the system back on.
4.4.6 - Accessing the various controllers on a network from a shared HMI terminal
If a terminal is shared so that it can be used with several controllers, simultaneously pressing the
Esc
+
keys switches between
controllers. The pLAN address for the controller is displayed on the "Machine state" screen, providing information on which control the
HMI is connected to.
For example, the screen below is the main screen for the board with the address 1:
4 - MANAGING THE CONNECTION BETWEEN CONTROLLERS AND
ALPHANUMERIC TERMINALS
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Summary of Contents for 39HXC
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