ERL tesla lite, User Manual, Page: 46 / 288

4 Communicating with the Recorder
4-16 TESLA LITE User Manual D03283R01.10
Table 4.2: SCADA Protocol Settings Mode
Mode Select one of the available SCADA modes.
Baud Rate Port 404 serial baud rate. Default is 19,200.
Parity Port 404 serial parity.
Note: When parity is set to None and a Modbus protocol is selected,
the number of stop bits automatically is set to 2, as per the Modbus
standard.
Stop Bits (Automatic setting). Always set to 1 stop bit except as noted in Parity
setting above.
Data Bits (Automatic setting) The number of data bits is controlled by the
selected protocol mode.
Modbus ASCII:7 data bits
Modbus RTU:8 data bits
DNP 3:8 data bits
Slave Address Identifies the unit to the SCADA master.
Datalink Timeout (DNP) Specifies the time in which the recorder expects a response
from the SCADA master to primary frame messages. If a response is
not received in this time, the recorder will re-transmit the message.
Configuration default timeout is 1000 ms per DNP3 Technical Bulletin
9804-002. This document is available from the DNP3 User's Group
(www.dnp.org).
For UDP and TCP modes, the timeout is not settable and is
automatically set to 0 milliseconds.
Master IP Address (DNP TCP or UDP) Defines the IP address of the master SCADA
device that will be polling the TESLA. This prevents unauthorized
master devices from communicating with the TESLA.
Note: This setting does not control IP address of the TESLA's
Ethernet card. That is done through the recorder's Maintenance
Menu.
Make sure the Master IP Address is different from the TESLA IP
Address.
Port DNP TCP or UDP) Defines the TCP or UDP port on which the DNP
service may be accessed. Usually set to 20000.