As explained in access parameters for the address book mode a certain pre-programming must be made on the DS side before this DS can be accessed using inband access method. Inband access method is usually used for remote Device Servers at locations with which out-of-band communications are not possible. Therefore, it may be not possible to pre-program the DS for inband access when it is already installed in its intended remote location!
There are two ways in which the pre-programming can be done:
| • | Use the auto-discovery access mode to pre-program the DS from a PC that is located on the same network segment as this DS. Alternatively, you can temporarily connect the DS to a local network segment, pre-program it, then return it to its intended remote location. |
| • | Use the COM access mode. Connect the serial port of the DS to the COM port of the PC and make the pre-programming through the serial port. |
Here is what you need to do:
| • | If the pre-programming is to be done through the network select the auto-discovery access mode and double-click on the DS in the device list- this will open the settings dialog. You don't have to change the IP-address of the DS- in this mode the DS Manager will be able to access even Device Servers with unreachable IP-address; |
| • | If the pre-programming is to be done through the serial port select the COM access mode and double-click on the COM port (to which the DS is connected) in the device list. You will be asked to press the setup button* and then the settings dialog will be opened. |
| • | In the settings dialog make the following choices: |
| • | Set desired IP-address for this DS (IP-address (IP) setting). Once the DS is installed in its intended remote location you won't be able to access it unless it already has a suitable and known IP-address; |
| • | Set desired data port number (Port Number (PN) setting). Once the DS is installed in its intended remote location you won't be able to access it unless it already has a suitable and known port number; |
| • | Select 0 (server) or 1 (server/client) for the Routing Mode (RM) setting. The DS won't accept data connections when the Routing Mode is 2 (client) and the inband programming is performed through the data connection. |
| • | Press OK to close the settings dialog and reboot the DS. |
Note on DHCP servers
Procedure above includes the setup of the IP-address. This should only be done if the remote network segment doesn't have DHCP service. If there is a DHCP service then it is better to run with the DHCP (DH) setting at 1 (enabled) and let the DHCP server handle the IP-address of the DS automatically.
The problem here is that the DHCP server may change the IP-address of the DS in the future and you will not know about this! If you want to prevent this from happening then set the IP-address of the DS manually and configure this IP-address as manually managed on the DHCP server's side (most DHCP servers provide an option to exclude certain IPs from automatic management).
* On EM100, EM120, EM200, EM203(A)- pull the MD line LOW for at least 100ms.