HMI Embedded Network Manager for PCU20 Network Drives
© Siemens AG, 2001. All rights reserved


1. General
2. Installation Info
3. Sharing a Folder with a PCU20
4. User Management
5. Troubleshooting
6. Miscellaneous


1. General

The HMI Embedded Network Manager represents the communication partner for PCU20
network drives. This Manager must be configured and started on every computer
which is to share folders and files with PCU20. The PCU20 communicate with the
HMI Embedded Network Manager via TCP/IP sockets. The following ports must be
available for this purpose:

- pcu20_ftp1  6743/tcp
- pcu20_ftp2  6744/tcp
- pcu20_ftp3  6745/tcp
- pcu20_ftp4  6746/tcp
- pcu20_ftp5  6747/tcp
- pcu20_ftp6  6748/tcp
- pcu20_ftp7  6749/tcp
- pcu20_ftp8  6750/tcp
- pcu20_ftp9  6751/tcp
- pcu20_ftp10 6752/tcp
- pcu20_ftp11 6753/tcp
- pcu20_ftp12 6754/tcp
- pcu20_ftp13 6755/tcp
- pcu20_ftp14 6756/tcp
- pcu20_ftp15 6757/tcp
If necessary, these ports are entered in the "services" file every time the HMI
Embedded Network Manager is started. If a port is already being used by another
program, this program must be deinstalled to free the relevant port for use by
the HMI Embedded Network Manager.


2. Installation Info

The installation of the HMI Embedded Network Manager is executed by means of the
"setup.exe" setup program. The following can be specified within this installation
program:
- The installation location on the hard disk.
- A folder within the program folder of the start menu.
- Whether the HMI Embedded Network Manager is to be started automatically each
  time the operating system starts.
- Whether the HMI Embedded Network Manager is to be started automatically after
  installation.
The HMI Embedded Network Manager can be de-installed after a successful
installation. This is done under "Start / Settings / System Control / Software"
by selecting the HMI Embedded Network Manager and de-installing using the
"Add / Remove..." button.

The HMI Embedded Network Manager has an HTML help and uses Microsoft's "HTML Help
Viewer" to display this. The "HTML Help Viewer" requires at least Internet
Explorer 4.0 or higher. If the "HTML Help Viewer" is not yet available on the
server computer, it can be installed using the "hhupd.exe" setup file (this is
located in the same directory which contains the setup file for the HMI Embedded
Network Manager). Internet Explorer 4.0 or higher must have been installed
beforehand (this is not on the CD-ROM).


3. Sharing a Folder with a PCU20

There are two possible ways of displaying a folder of the server computer on a
PCU20. Firstly, a folder can be shared under Windows by the user who started
the Network Manager. Secondly, a folder (also mapped) can be shared as an
HMI-specific drive.
If an operating system share and an HMI-specific share both have the same name
on the server computer, the operating system share will be used first. This
situation can occur only, however, if an operating system share is set up after
the definition of an HMI-specific share as there is a check during the creation
of an HMI-specific share whether an operating system share with the same name
already exists, so that this can be rejected.

3.1 Windows Shares

As access to an enabled drive is executed via the Network Manager and not via
the PCU20, the PCU20 has the rights to operating system shares which the
HMI Embedded Network Manager has on the server computer.
If a folder of the server computer is to be displayed on a PCU20, this must
be enabled under Windows for the user who started the HMI Embedded Network Manager.
To do this, right click the folder in Windows Explorer and select "Share..."
in the displayed context menu. Select "Share as" and enter the share name.

3.2 HMI-Specific Shares

HMI-specific shares provide an additional method of displaying folders for a
connected PCU20. This is mainly used to also obtain access to mapped folders
of the server computer and thus allow the HMI Embedded Network Manager of the
server computer to be used to access other computers of the network. This requires
that the shared drive of the other computer is connected to the server computer.
This connected drive can then be configured in the HMI Embedded Network Manager
as an HMI-specific shared drive and therefore reached by a PCU20 which is
connected to the server computer.
HMI-specific share names can have up to 40 characters. Upper and lower case
letters, numbers, underscore ("_") and hyphen ("-") are permitted. The share
name must always begin with a letter.

3.3 Access to Shared Folders

Now start the HMI Embedded Network Manager if this is not yet active. Do this
by starting HMI Embedded Network Manager in "Start / Programs / <Name selected
during the installation> / HMI Embedded Network Manager". The icon for the
HMI Embedded Network Manager appears in the status area of the task bar. If
the HMI Embedded Network Manager has already been set for the communication with
connected PCU20 (see User Management), the shared folder can now be accessed.


4. User Management

A right-click on the icon for the HMI Embedded Network Manager and selecting the
"User Management..." menu item or double-clicking the icon displays the user list.
To allow secure communication, a user with the associated password must be
entered on each PCU20. If this PCU20 is to have access to shared folders of the
server computer, this user must also be entered with the associated password in
the user list of the HMI Embedded Network Manager. To actually obtain access to
the shared folders, each user must be assigned those shared drives to which he
is to have access. This is executed in the "New ..." or "Edit ..." dialog boxes.
This allows the precise assignment of the server computers and the folders of this
server computer to be allocated to each PCU20.
Each PCU 20 is supplied with a "PCU20_USER" standard user which the installation
also enters in each HMI Embedded Network Manager. However, because the structure
of the server computer is not known, no shared drive has been configured.
Therefore, at least one shared drive must be assigned to the standard user in
order that a PCU20 can access the server computer. However, this user should
only be used for a simple point-to-point connection as, within a larger network,
access can be made to the data of the server computer and no secure communication
between the PCU20 and the server computer can be guaranteed.
The "User management..." dialog box has the following buttons which open additional
dialog boxes:
- New...     : A new user can be created.
- Edit...    : A selected existing user can be edited.
- Delete...  : A selected existing user can be deleted.

5. Troubleshooting

Two options are available for fault finding. Firstly a message window can be
opened, and, secondly, a protocol file can be activated which very precisely
logs all the steps of the data exchange between the HMI Embedded Network
Manager and a PCU20. The fault finding options are secured by the system or
manufacturer's password.

-------------------------------------------------------------------------------
Note:
These fault finding options must not be active during normal operation as
otherwise there are speed losses during communication between the HMI Embedded
Network Manager and the connected PCU20. Apart from that, the log file would
use up the entire hard disk.
-------------------------------------------------------------------------------

5.1. Message window

You can obtain status information about the current state of the HMI Embedded
Network Manager by right-clicking on the HMI Embedded network manager icon, and
then selecting the "Debug / Message window..." menu item. This dialog is used
for fault finding if it is not possible to set up communication with a connected
PCU20 or if problems occur during communication.

The dialog offers the following options:
- The list box for displaying the status information can be deleted with the
  "Clear message list" button in order to improve clarity.
- The contents of the list box can be stored in a file for later processing by
  using the "Save messages to file" button.
- The maximum number of lines in the list box can be set to between 100 and
  10,000. If the preset upper limit on the number of messages is reached, the
  contents of the list box are stored in file "_$TEMP$_.MWI", and the upper
  half of the messages just displayed is deleted from the list box.
- The "Show message window during program start" selection box can be used to
  specify whether the message window should become active immediately during
  the start of the HMI Embedded Network Manager. However, this option should
  only be selected during active fault finding.
- There is a filter option between two classes of status information. The
  "Show all available messages" selection displays all available messages in
  the list box. The "Show command messages" selection only displays the requests
  of the PCU20 to the HMI Embedded Network Manager, and hides all intermediate
  steps during the processing of the requests. In certain situations it may be
  necessary to restrict the amount of status information displayed in order to
  obtain better clarity.

5.2. Log file

You can activate a log file ("nwmtrace.log") by right-clicking on the HMI Embedded
Network Manager icon and then selecting the "Debug / Activate detailed trace file..."
menu item. All message frames which are sent over the network are logged in this file.
This information may be used to find possible faults in the network communication.
This fault finding option is considerably more precisely subdivided than the
message window, it should only ever be used when the possible fault cannot be
found with the message window. The log file is stored in the installation
directory of the HMI Embedded Network Manager. In order to activate the log file,
the HMI Embedded Network Manager is automatically restarted. When doing so, it
must be ensured that no PCU20 attempts to link to the HMI Embedded Network Manager
during restart as this would fail and no communication would take place.


6. Miscellaneous

To display the version of the installed HMI Embedded Network Manager, click on
the HMI Embedded Network Manager icon with the right mouse button and select menu
option "About...".