Date Code 20010518 General Description 2-13
SEL-2020 Instruction Manual
You should use the SET P command to configure each port. The first prompt from the SEL-2020
requests you to identify the type of device connected to the port. Port F can only be configured
as a Master port. The choices for Ports 1 to 16 include:
U (Unused)
The U response indicates that there is no device connected to the port. Accepting the setting
with this choice deactivates the port.
S (SEL IED)
The S response indicates that an SEL relay or SEL-2020 is connected to the port (for other SEL
devices, such as a PRTU, select O for Other IED). The SEL-2020 then asks you if the SEL-2020
should perform an auto-configuration with the relay on the port. If you respond YES, the
SEL-2020 will automatically attempt to configure the port with information from the attached
SEL relay. The SEL-2020 will determine the baud rate, relay type, relay ID, and if the SEL relay
supports Fast Meter and Fast Operate data transfers. You will then be prompted for additional
communication options and preferences.
O (Other IED)
The O response indicates there is an IED connected (possibly through a modem) to the port, but
not an SEL relay. The SEL-2020 will ask you if the SEL-2020 should perform auto-baud with
the device on the port. If selected, the auto-baud function will attempt to determine the correct
baud rate needed to communicate with the attached IED. You will then be prompted for
information about the device and other communication options and preferences.
P (Printer)
The P response indicates there is a serial printer attached to the SEL-2020. With this choice, you
will be prompted for an ID string and several communication options and preferences.
M (Master)
The M response identifies the connected device as a master that can send messages to the
SEL-2020 and receive messages from the SEL-2020. Master devices include PCs, RTUs, and
modems. The SEL-2020 will prompt you with several configuration options and communication
options and preferences.
SET A - Auto-Message Settings (Ports 1-16)
The first setting in the SET A group prompts you to determine if unsolicited messages should be
stored in a buffer area associated with each port. After that, the setting group prompts you for
the number of auto-messages desired on the port, the trigger condition for each message, and the
message string that will be sent out of the SEL-2020 port. The setting also determines how a
message response is treated by the SEL-2020. Messages and data received in response to
standard SEL-2020 messages (“20” messages) are parsed automatically into the database.
Alternate parsing options are available for nonstandard messages (non-“20” messages). If
To Next Page
Loading...