Schweitzer Engineering Laboratories SEL-2020 - WHO (Access Level 1)

Date Code 20010518 Commands 5-23
SEL-2020 Instruction Manual
NR n Add an NR followed by a count parameter “n” after a register reference
to see “n” registers of data.
Example: VIEW 1:0807h NR 4
WHO (Access Level 1)
You can use the WHO command to obtain a list of devices connected to the SEL-2020. The
SEL-2020 responds with a table showing device type, protocol, baud rate, data bits, stop bits,
parity, and a device identification string for the device on each port. The screen below shows a
sample response.
*>WHO<ENTER>
*>WHO<ENTER>*>WHO<ENTER>
*>WHO<ENTER>
Date: 03/07/95 Time: 11:06:56
FID=SEL-2020-R100-V0-D950324
Port # Device Protocol Parameters Identification
1 SEL-151 SEL 9600,8,2,N Example 21.6 kV Line
2 SEL-151 SEL 9600,8,2,N Example 21.6 kV Line
3 SEL-151 SEL 9600,8,2,N Example 21.6 kV Line
4 SEL-151 SEL 9600,8,2,N Example 21.6 kV Line
5 SEL-151 SEL 9600,8,2,N Example 21.6 kV Line
6 SEL-151 SEL 9600,8,2,N Example 21.6 kV Line
7 SEL-151 SEL 9600,8,2,N Example 21.6 kV Line
8 Master SEL 38400,8,2,N MODEM
9 Printer Ascii 9600,8,2,N Line Printer
10 SEL IED SEL 9600,8,2,N
11 Master SEL 9600,8,2,N RTU
12 Other IED Ascii 300,8,1,N DGH1000
13 SEL IED SEL 9600,8,2,N
14 SEL IED SEL 9600,8,2,N
15 SEL IED SEL 9600,8,2,N
16 Master DNP 9600,8,2,N
F* Master SEL 2500,8,2,N
*>
Note the “*” just to the right of the F in the Port # column on the above screen. This “*”
indicates the port you are connected to.