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4 Communicating with the Recorder
4-14 TESLA LITE User Manual D03283R01.10
4.8 Modem LAN Gateway
Recorders on a LAN can be remotely accessed through a modem on a
designated master recorder. The master acts as a gateway to the LAN,
providing a route for IP communication between Control Panel or
RecordBase and other TESLA 4000 recorders to the network. Although
commonly used as a part of a cooperative group configuration, a gateway
modem can also be used simply as a means to communicate with networked
recorders.
1. Connect the recorders to the LAN and set their IP addresses.
2. Configure one of the recorders (now designated the master recorder) with an
internal or external modem (see “External Modem” on page 4-11 or “Inter-
nal Modem” on page 4-13).
3. Enable TCP packets forwarding on the master recorder (for details see Main-
tenance “Maintenance Menu Commands” on page 12-3).
4. Set up TESLA Control Panel to communicate with the master recorder via
the PC’s modem and create and configure an appropriate IED Definition for
it (see “External Modem” on page 4-11).
5. Create an (or modify existing) IED Definition for each recorder to be ac-
cessed through the gateway (not including the master recorder). Under
Communication, select Connect Through IED and pick the master IED cre-
ated in the previous setup.
6. To initiate communication with any of the recorders, choose the target re-
corder from the Select IED list in TESLA Control Panel’s Main Menu and
use the Connect button.