Schweitzer Engineering Laboratories SEL-2020 - ID (Access Level 0); IRIG (Access Level 1); MAP M (Access Level 1)

5-10 Commands Date Code 20010518
SEL-2020 Instruction Manual
ID (Access Level 0)
The SEL-2020 responds to the ID command with its current ID string, as set in the global settings
described later in this section, and its firmware identification string (FID string). The command
response is as follows:
*ID<ENTER>
*ID<ENTER>*ID<ENTER>
*ID<ENTER>
“FID=SEL-2020-R100-V0-D950306”,”06D2”
“COMMUNICATIONS PROCESSOR - S/N 95012004”,”0A6B”
*
The four digits at the end of each line are the 16-bit checksum in ASCII-hexadecimal for the pre-
ceding string. This checksum is calculated by summing the character codes starting with the first
quote and going through the comma separating the string and checksum.
Normally, you use the WHO or STATUS command to determine this same information. The ID
command provides consistency between the SEL-2020 and newer SEL relays.
Add a port number to the ID command (ID n, where n is any valid port number 1 to 16) to obtain
the FID and ID of the device connected to that port of the SEL-2020.
IRIG (Access Level 1)
The IRIG command directs the SEL-2020 to read the IRIG-B time-code input at the IRIG-B port
on the back panel.
If it reads the time code successfully, it updates the internal clock/calendar time and date. The
SEL-2020 then sends its ID, date, and time to the terminal.
*>IRIG<ENTER>
*>IRIG<ENTER>*>IRIG<ENTER>
*>IRIG<ENTER>
COMMUNICATIONS PROCESSOR - S/N 95012004 Date: 03/07/95 Time: 09:06:33
*>
If the IRIG-B signal is not present or cannot be read, the SEL-2020 sends the error message
“IRIG-B DATA ERROR.”
Note: Normally, using this command is unnecessary because the SEL-2020 automatically
synchronizes every few minutes; however, you can use the IRIG command to avoid
waiting for automatic synchronization during testing and installation checkout.
MAP m (Access Level 1)
You should use the MAP command to see the organization of data stored in a port database.
Parameter m specifies the port number. Data are listed by association with each region if only
the port number parameter is given. If you add a region parameter, text and numeric references
are shown for data stored in the region, e.g., MAP 2:TARGET. (See access methods discussion
in Section 9: Database for a complete description of database access methods.)