Product data

14
Networking Hardware
2.2.11 Ethernet Router
Ethernet routers allow you to establish a LAN (local area network), which can then be connected
to the Internet. Information sent from a PC or device will have a destination address. It travels to
the router, where the router looks up the destination address and forwards it to the appropriate
PC or device on the local network. This equipment can be used to connect multiple controllers
and a PC over a network and allow them to communicate using the MODBUS IP
TM
protocol.
Figure 14. RuggedCom Ethernet Router
Recommended: RuggedCom RuggedRouter RX1000 (shown above)
NOTE: Routers vary greatly in cost. The RuggedRouter
RX1000 is a high-end industrial router. If a less expensive,
non-industrial router is desired, Linksys provides reliable
alternatives.
2.2.12 Cellular Modem (supporting MODBUS
TM
)
Wireless cellular modems connect through an existing cell network. Several mobile standards ex-
ist, however, Morningstar recommends using GSM (Global System for Mobile communications).
GSM is used by over 80% in the global cell market. Verify your cellular service provider uses a
mobile standard compatible with the cellular modem you purchase. Important: This equipment
must be MODBUS
TM
compatible.
Figure 15. Digi Cellular Modem