User's Manual

Table Of Contents

CHAPTER3

CommunicatingwiththeRTU

You can use a Windows Hyperterminal window to connect to the A753

remote wireless modem. After you have installed the system, follow

these steps to configure the device and set the default parameters:

Note: To configure the A753, you must have a special adapter cable (item

number 200.720.540 from your Adcon distributor) and plug it into the

SOLAR CELL connector.

1. Open a Hyperterminal window.

2. Select the appropriate serial port and click OK.

3. Configure your terminal as follows:

• 19200 baud

•1 stop bit

• 8 data bits

•No parity

• No protocol (neither hardware nor software)

4. Select OK to open the terminal window.

5. Press Enter to generate a response in the window.

Note: The A753 has two command line modes, bootloader and firmware.

BootingtheA753

Note: This section is included for informational purposes. You will rarely

need to boot the A753. However, when you do need to do so, you will

work within a Windows Hyperterminal window on your computer.

BootloaderMode

When the A753 starts from a power-up reset (such as when you

connect the battery to the unit), it enters the bootloader mode. If you

press no keys in the interim, the A753 enters the firmware mode in

five seconds.

If you want to work with commands in the bootloader rather than

continuing to the firmware mode, press ESC within five seconds after

seeing the following sign-on message:

A753 Bootloader V1.7

Press <ESC> within 5 seconds to start the commandline

interface...

You are in the command line interface of the bootloader. This interface

enables you to perform certain commands such as upgrading to a new

firmware or rebooting the device.

Note: If you press no keys within 60 seconds, the bootloader command line

interface will start firmware mode automatically.