Siemens M20 Terminal Technical Description page 194

Siemens Information and Communication Products
8.5.5 M20T: Booting for SW loading
Please follow the given sequence exactly for successful booting and loading of M20 Software/SW updates.
Fig. 8-3 Top view of open M20T
1) To activate SW-loading mode of the M20 the BOOTCODEENABLE pads of the M20T have to be connected
during the power-up of the M20/M20T. The Ignition line has to be set HIGH during the entire SW loading
2) Make sure that M20T is not connected to the mains (Off)
3) Remove top cover of the M20T (all connections remain intact) and find 2 BOOTCODEENABLE pads (see Fig. 0-
1:Top view of open M20T)
4) Connect the two BOOTCODEENABLE pads during connection of the M20T to the power mains.(eg. Using a
screwdriver tip)
5) Ignition line has to be set HIGH (2,7V < Ignition < 6,2V) (max.50V) PIN 6 on the 6-pole Western plug of the M20T,
see also Technical Description chapter: 8.8.6 Ignition line.
6) Once power up is achieved the connection between the pads can be removed.(about 1 sec.)
8.5.6 SW installation
1) Copy SW-Version system.mot to a local drive.
2) Copy the program PCload32.exe to a local drive.
3) Start PCload32.exe by double clicking. Note: Double-click on system.mot will not start the correct loading program.
4) Close PCload32.exe.
Note: This version is designed for use with Microsoft Windows95/98/NT.
Version 8 dated 15.03.00
Application notes
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