Appendix E: Compressed Ascii Commands; Introduction - Schweitzer Engineering Laboratories SEL-311C Instruction Manual

APPENDIX E: COMPRESSED ASCII COMMANDS

I
NTRODUCTION
The SEL-311C Relay provides compressed ASCII versions of some of the relay's ASCII
commands. The compressed ASCII commands allow an external device to obtain data from the
relay, in a format which directly imports into spreadsheet or database programs, and which can
be validated with a checksum.
The SEL-311C Relay provides the following compressed ASCII commands:
Command
CASCII
CSTATUS
CHISTORY
CEVENT
CSUMMARY Event summary message
CASCII C
OMMAND
The compressed ASCII configuration message provides data for an external computer to extract
data from other compressed ASCII commands. To obtain the configuration message for the
compressed ASCII commands available in an SEL relay, type:
CAS <CR>
The relay sends:
<STX>"CAS",n,"yyyy"<CR>
"COMMAND 1",ll,"yyyy"<CR>
"#H","xxxxx","xxxxx",......,"xxxxx","yyyy"<CR>
"#D","ddd","ddd","ddd","ddd",......,"ddd","yyyy"<CR>
"COMMAND 2",ll,"yyyy"<CR>
"#h","ddd","ddd",......,"ddd","yyyy"<CR>
"#D","ddd","ddd","ddd","ddd",......,"ddd","yyyy"<CR>
•
•
•
"COMMAND n",ll,"yyyy"<CR>
"#H","xxxxx","xxxxx",......,"xxxxx","yyyy"<CR>
"#D","ddd","ddd","ddd","ddd",......,"ddd","yyyy"<CR><ETX>
where: n is the number of compressed ASCII command descriptions to follow.
COMMAND is the ASCII name for the compressed ASCII command as sent by the
requesting device. The naming convention for the compressed ASCII commands is a
'C' preceding the typical command. For example, CSTATUS (abbreviated to CST) is
the compressed STATUS command.
ll is the minimum access level at which the command is available.
Date Code 20011205
Description
Configuration message
Status message
History message
Event message
—G F
ENERAL ORMAT
Compressed ASCII Commands
SEL-311C Instruction Manual
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