Date Code 20010625 Compressed ASCII Commands E-1
SEL-311L Instruction Manual
APPENDIX E: COMPRESSED ASCII COMMANDS
INTRODUCTION
The SEL-311L 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-311L Relay provides the following compressed ASCII commands:
Command
Description
CASCII Configuration message
CSTATUS Status message
CHISTORY History message
CEVENT Event message
CSUMMARY Event summary message
CASCII COMMAND—GENERAL FORMAT
The compressed ASCII configuration message provides the format information in all the
compressed ASCII commands. This facilitates an external computer extracting data using 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.
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