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4 Communicating with the Recorder
D03283R01.10 TESLA LITE User Manual 4-9
4.6 Direct Serial Link
Figure 4.6: Direct Serial Link
To create a serial link between the recorder and your computer, connect your
computer’s serial port and Port 405 on the recorder’s rear panel.
The serial ports are configured as EIR RS-232 Data Communications Equip-
ment (DCE) devices with female DB9 connectors. This allows them to be con-
nected directly to a PC serial port with standard straight-through male-to-
female serial cable, for pin-out for details see Communication Port Details on
page 4-14. Rear Port 404 is for SCADA and Port 405 can be used for direct
serial access and external modem.
1. Ensure the recorder port and your PC’s port have the same baud rate and
communication parameters.
• Port 405 is fixed at 8 data bits, no parity and 1 stop bit and has a default
baud rates of 38,400 bauds.
2. Choose the target recorder from the Select IED list in TESLA Control Pan-
el’s Main Menu.
• If there is not already an entry for this recorder, create one using the Add
New button.
• The method of communication with the recorder is specified as part of
its IED definition. Use the Edit button to view or change this informa-
tion. Ensure the Direct Serial Link option is selected.
• For details on IED definitions see “Working with TESLA Control Pan-
el” on page 5-1.
3. Initiate the connection by selecting the Connect button.
• A dialog box will appear to show connection progress.
• The connection state and the current IED you are connected to is shown
on the Windows status bar at the bottom of the screen.
Your PC must be appropriately configured for serial communication
(see “TESLA Control Panel Installation” on page 3-1).
Port 405 - direct/modem
Laptop PC