Schweitzer Engineering Laboratories SEL-2890, Instruction Manual

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SEL-2890 Instruction Manual Date Code 20210715
Settings and Commands
Commands
3.10
processes the data that has already been sent. In hardware flow control, a voltage signal
on Pin 8 signals the sending device to temporarily quit sending data. Set the flow
control to match the IED that will be communicating with the SEL-2890.
Force RTS Low
The SEL-2890 allows you the option of forcing the Request to Send (RTS) flow control
line to either high or low when Flow Control is set to None. The default value of
N
should work for most installations. When using DNP3, set RTS_Low to Y for
connecting an SEL-2890 to an SEL IED.
For information on IP, SUBNET_MASK, and GATEWAY settings, see Ethernet
Network Operation Settings on page 3.14 .
Commands
ASCII commands are used to modify settings, troubleshoot problems, and control
actions of the SEL-2890. The command prompt is accessed by a terminal session
through the network via Telnet or directly through a serial port. Commands are not case
sensitive. However, passwords are case sensitive.
Console Session: Telnet
Access the command prompt for the SEL-2890 by opening a Telnet session to port
1025. Port 1025 is referred to as the Console Port. The Console is the user interface to
the SEL-2890. The Level 1 and Level 2 Console prompts are #> and ##>. Accessing
different levels is discussed in
ACCESS and 2ACCESS .
Console Session: Serial Port
The serial port can also be used to access the Console. In fact, the serial port is the only
connection that can be used to modify the IP, Gateway, and Subnet Mask addresses.
You may need to have an SEL-C663 or SEL-C642 interface cable if your PC does not
supply 5 Vdc power from Pin 1. The SEL-C642 cable (shown in
Figure 2.1 ) allows the
SEL-2890 to be powered from a standard 120 Vac duplex outlet via a wall-mount
transformer. The SEL-C663 cable allows the SEL-2890 to be powered from the USB.
Neither of these cables will interfere with any serial data transmissions.
To enter the Console, unplug the Ethernet cable and then open an ASCII terminal to
establish a serial connection. With firmware version R104 and newer, the SEL-2890
overrides the SPEED setting and operates at 19200 bps, no parity, 8 data bits, and 1
stop bit whenever an Ethernet connection is not present (the SEL-2890 always
determines the communications speed from the SPEED setting in firmware versions