Westermo GDW-11 Installation and operating instructions
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Moeller Easy Relay & GDW-11 www.westermo.com
Application Note
Moeller Easy Relay & GDW-11
Remote Access Over GSM
AN-0133-ENG rev1.1 Page 1
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Moeller Easy Relay & GDW-11 www.westermo.com
Application Note
Contents
1. ntroduction…………………………………………………………..
2. Configuring the GDW-11…………………………………………...
3. Configuring EASY-SOFT Pro……………………………………...
4. nterface connection details………………………………………..
5. Configuring Hyperterminal………………………………………….
6. Using EASY-SOFT Pro to communicate remotely……...……….
7. Closing down the modem connection…………………………….
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Page 11
AN-0133-ENG rev1.1 Page 2
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Moeller Easy Relay & GDW-11 www.westermo.com
Application Note
1. Introduction
n the above application, the PC will be able to connect to the Easy Relay device using a
GDW-11 modem connected to the GSM network. The PC will need to have an external
modem connected to establish a call to the remote location. t is not possible to use an internal
modem, as EASY-SOFT Pro only allows communication via COM ports.
This application note will explain what is required to setup a GDW-11 modem and the Easy-
Soft Pro software to enable programs to be downloaded and uploaded to the Easy Relay unit.
n order to complete these instructions you will need the following items as a pre-requisite:
CSD Enabled S M Card with a separate data number assigned
EASY-SOFT Pro V6.20
Moeller PC-CAB Serial nterface lead
GD-Tool configuration software
Straight through, male to female, 9 way serial cable (for programming GDW-11)
A suitable S M card can be bought through Westermo. We will arrange for the data number to
be assigned at the time of purchase.
f you only have EASY-SOFT Pro V6.10, update to V6.20 by using the update link within the
menu of the program.
The GD-Tool configuration software is supplied on a CD-ROM with the GDW-11, or it can be
downloaded from the Westermo website: www.westermo.co.uk
The serial cable will need to be fully terminated, GD-Tool will not work with just pins 2,3 & 5
connected!
GSM
Network
AN-0133-ENG rev1.1 Page 3
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Application Note
2. Configuring t e GDW-11
Start the GD-Tool program and connect the PC to the GDW-11 with the serial cable. Power
up the modem, then click on the Autoconnect button to establish comm’s.
Once GD-Tool has read all of the settings in the modem, there will be several tabs available
to click on. For this application, we are only interested in the Basic and Serial tabs.
Configure the serial port for a
bit rate of 9600 and ensure that
flow control is enabled, as
shown on the left.
At the bottom of the screen
click on the “Write” button to
store these settings in the
modem
Click here to
commence comm’s
AN-0133-ENG rev1.1 Page 4
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Moeller Easy Relay & GDW-11 www.westermo.com
Application Note
Now click on the Basic tab to configure the connection details. Set the boxes as shown
below and then click on the “Write button” to store these settings.
That completes the setup of the GDW-11 modem. Close GD-Tool and disconnect the
serial cable to the modem.
AN-0133-ENG rev1.1 Page 5
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Moeller Easy Relay & GDW-11 www.westermo.com
Application Note
Run the Easy-Soft configuration software and navigate to the communication option on the
menu bar. Click on the nterface option and select the desired COM port to be used. Then set
the nterface baud rate to 9600, as shown below.
3. Configuring EASY-SOFT Pro
Navigate back to the communication menu and
select nterface, followed by the timeout option.
The box shown on the left will appear, Change
the “PC => Local Device” value to 10000 ms.
gnore the “PC => Net Station” setting and click
on the “OK” button.
Set baud
rate to 9600
Select COM
port for t e
connection
AN-0133-ENG rev1.1 Page 6
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Application Note
To enable communication between the modem and the Easy relay, it is necessary to make
up an interface cable. The drawing below shows the required connections.
Connect the cable between the two devices, ensuring that the correct end is fitted to the
relevant port.
4. Cable connection between GDW-11 & Easy Control Relay
2
3
5
8
3
2
4
5
7
Connect this
end to the
GDW-11
serial port
Connect this
end to the
Easy PC-CAB
lead
Now power up the GDW-11 and Easy Relay units. After a few seconds check that the
GDW-11 NET LED is flashing to indicate network availability.
9 Pin D Sub
(Male)
9 Pin D Sub
(Male)
nterface cable
AN-0133-ENG rev1.1 Page 7
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Application Note
5. Configuring Hyperterminal to make a connection
Attach the serial cable to the external modem and make sure that the modem is powered up.
Click on the Windows start button, go to Programs, Accessories, Communications and select
Hyperterminal. When the program starts choose a name for your connection and select “OK”.
Set-up the COM port for the settings
shown on the left and click on the OK
button.
When this dialogue box appears set the
“Connect using” box to the COM port
connected to the external modem.
Then click on the OK button
AN-0133-ENG rev1.1 Page 8
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Application Note
The main terminal window will
now be displayed. To test the
modem is responding type the
command:
AT <CR>
The modem should respond with
“OK”.
f you don’t see any characters when you type the commands, it is likely that the echo is
switched off. This will not affect the operation of the modem, but if you wish to see what
you’re typing, use the command:
ATE1<CR> (switches the echo on)
Now type the following commands in turn:
AT&D0<CR> (this will tell the modem to ignore the DTR line status)
AT&W<CR> (this will store the above setting into memory)
To dial out to the GDW-11:
ATDxxxxxxxxxxx<CR> (where xxxxxxxxxxx is the data number of the GDW-11)
Note: Remember to precede your data number with a 9, if you are calling from an internal
exchange.
Once the modem has connected, a status message will appear on the screen to indicate a
successful connection. The screen shot shown above details the sequence more obviously.
Now that the modem connection is established, it is necessary to disconnect the
Hyperterminal session to allow the EASY-SOFT Pro program to use the same COM port
connection.
t is not necessary to close Hyperterminal to
disconnect the session. Just click on the button on
the tool bar shown on the left.
T h e b o t t o m l e f t c o r n e r s h o u l d i n d i c a t e
“D isconn ecte d” to s how the st atus o f t he
connection.
Click t is button to
disconnect t e
session
AN-0133-ENG rev1.1 Page 9
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Moeller Easy Relay & GDW-11 www.westermo.com
Application Note
With the modem connection established and Hyperterminal session disconnected, bring
up the EASY-SOFT Pro program.
6. Using EASY-SOFT Pro to communicate remotely
Click on the “Online” button and wait. There
will be a delay while the software attempts
t o c o m m u n i c a t e o v e r t h e m o d e m
connection. Once it has established a link
with the Easy Relay, the “Online” button
becomes greyed out and the “Offline” button
becomes available.
Greyed out
once link is
establis ed To download the program from the remote
unit, click on the “Device=>PC” button. .
Once the download starts, a progress bar
will appear.
To upload a program, open the required file
and click on the “PC=>Device” button. f the
remote unit is running, you will be prompted
to confirm that the unit can be stopped to
perform this function
Once you have completed the file transfer,
click on the “Offline” button to close the
connection to the remote unit.
Now close the EASY-SOFT program
before re-connecting the Hyperterminal
session.
Now click on the “Connection” box at the
to p l e f t of t he sc ree n t o r ev e al th e
connection panel.
n t h e l e f t han d c or n e r cli c k on th e
“Communication button” When prompted,
select the type of Easy Relay device you will
be connecting to.
AN-0133-ENG rev1.1 Page 10
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