Schweitzer Engineering Laboratories SEL-321 - Automatic Messages; Command Characteristics

3-4 Communications Date Code 20011026
SEL-321/321-1 Instruction Manual
Automatic Messages
The relay may send the following messages to the port(s) designated automatic:
Startup Message:
Immediately after power is applied, the relay transmits the following message to the port(s)
designated automatic:
EXAMPLE: BUS B, BREAKER 3 Date: 02/01/93 Time: 00:00:00.186
SEL-321
=
The ALARM relay should pull in.
Group Switch Message:
EXAMPLE: BUS B, BREAKER 3 Date: 02/01/93 Time: 23:31:17.489
Active Group = 2
Group Variable = 2
=>>
Status Report:
SEE THE STATUS COMMAND FOR THE FORMAT OF THE STATUS REPORT
Summary Event Report:
SEE THE EVENT REPORTING SECTION FOR THE FORMAT OF THE SUMMARY EVENT REPORT
On CR_RAM failure, if ERESTART = Y (SEL-321-1 Relay only):
EXAMPLE: BUS B, BREAKER 3 Date: 02/01/93 Time: 23:31:17.489
Detected Critical RAM Failure. The Relay Is Restarting.
=>>
COMMAND CHARACTERISTICS
The relay responds to commands sent from a terminal to each serial communications interface.
The relay may also be accessed from the front-panel controls. For relay access via the front-panel
controls, see Front-Panel Operation later in this section.