Function Diagram; Initial Logon Of Mde; Repeated Logon Of Mde - Vectron HW 90196 User Manual

Vectron

9.3 Function diagram

9.3.1 Initial logon of MDE

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The radio fixed part (in Base Station) sends program Switcher signal information about established
connection to Mobile Part (=radio module in MDE).
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Switcher determines serial number of MDE.
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By network broadcasting Switcher checks, if there already is a Base Station which has operated this
MDE. It will recieve no response as this is the initial logon.
•
Switcher starts a local Gelnet.
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Gelnet starts a Telnet and logs on to host with user name and password.
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The application on host is started.
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Switcher transmits all data from/of the serial interface to local Gelnet and vice versa.
•
The communication line between MDE and host can be described as followed:
MDE – Radio MP – Radio FP (Base Station 1) – Switcher (Base Station 1) – Gelnet (Base Station 1)
– Telnet (Base Station 1) - host

9.3.2 Repeated logon of MDE

•
The Radio fixed part (in Base Station) sends program Switcher signal information about established
connection to Mobile Part (= Radio module in MDE).
•
Switcher determines serial number of MDE.
•
By network broadcasting Switcher checks, if there already is a Base Station which has operated this
MDE.
•
As the MDE has already communicated with a Base Station the Gelnet of this Base Station sends a
message. This can – but does not have to be – identical with the current Base Station; to explain this
more clearly, it is suggested that the MDE has now a connection with Base Station 2.
•
Switcher transmitts all data from/of the serial interface to remote Gelnet and vice versa.
• The communication line between MDE and host can be described as followed:
MDE – Radio MP – Radio FP (Base Station 2) – Switcher (Base Station 2) – Gelnet (Base Station 1)
– Telnet (Base Station 1) – host
© Höft & Wessel AG
Subject to amendment, errors excepted
User manual
HW90195UserMan.doc 1.0 02.02.2001 Lin
page 56/70