Weidmuller WI-MOD-945-E: 900Mhz Wireless Ethernet & Device Server v2.16 - Manual (Page 41)

Weidmuller Wireless Ethernet Modem & Device Server WI-MOD-945-E User Manual
Page 41 www.weidmuller.com Rev 2.136

If you wish to use routing over this serial network connection, then the IP addresses selected must not lie on
Wireless or Wired Ethernet networks already configured into the device. You must ensure they set routing rules
appropriately for devices either side of the network.

If you want the serial device visible as present on the Wireless or Wired network, then the local IP address must
be the same as the IP address set for the desi
red port. A process called “Proxy ARP” is used to make the device
visible on the network. In this process, the WI-MOD-945-E pretends that it holds the IP address on the network,
and responds on behalf of the remote device.
The result of this is similar to bridging for a single device, with some exceptions. One of these exceptions is the inability to
handle name server searches of the network via this serial link. For example, you would encounter difficulty if you were to
use Windows Explorer over the serial link to find a PC on the wired network. For this to operate correctly you must
explicitly map computer names to IP addresses in the “LMHOSTS” file on your PC.
To configure Windows XP to establish a PPP connection to a WI-MOD-945-E in SETUP mode, follow these steps:
1. On Network Connections in Windows XP, select Create a new connection
2. On the New Connection Wizard, click Next
3. Set up an advanced connection
4. Connect directly to another computer
5. Set PC as guest
6. Set Connection Name
7. Select a COM port
8. Select availability
9. Click Finish
10. Select properties of this new connection by right clicking on connection.
11. General Tab click on Configure button
12. Ensure maximum speed is 115200bps, click OK
13. Select Networking Tab - click on Internet Protocol (TCP/IP) in list box and then click Properties button.
14. On Properties form click Advanced button
15. On Advanced TCP/IP Settings form- General Tab, unch eck field in PPP link stating “Use IP header compression”.
16. Configuration is now complete. Click on this newly created link to establish a connection to WI-MOD-945-E.
17. Ensure both the username and the password is entered exactly as configured in WI-MOD-945-E. (When booted
in SETUP mode, the PPP server has username “user” and password “user”.)
Serial Gateway (Server/Client/Multicast)
Serial Gateway functionality is available for both RS-232 and RS-485 ports independently, and enables serial data to be
routed via the wired or wireless network connection. Serial Gateway functionality is similar to radio modem functionality,
allowing point-to-point and multipoint serial data transfer.
The Serial Gateway can be configured as either as Server, Client, Multicast Group, or Modbus.
When configured as “Server”, the module will wait for a TCP connection to be initiated by a remote client.
When configured as “Client”, the module will automatically attempt to connect to a specified remote server using TCP.
When configured as “Multicast Group”, the module will broadcast data to all members of the same Multicast Group using
UDP.
With the Serial Gateway Server, Client and Multicast functions it is possible for serial data from a WI-MOD-945-E to be
transferred to any other WI-MOD-945-E serial ports including the corresponding port on the same WI-MOD-945-E.