TL1 Command Interface
270 SSU-2000 User’s Guide 12713020-002-2 Revision D – April 2004
The SSU-2000 sends the in-process acknowledgment (IP) only if it is unable to
respond to the command within two seconds. The requested response is then sent
in full when the SSU-2000 data is available.
The in-process acknowledgment response always begins with a carriage return and
two line feed characters, and ends with the header line containing the source
identifier (sid), defined below, and the date^time stamp.
The format for the IP acknowledgment message is:
<cr lf lf>
^^^sid^date^time <cr lf>
IP^ctag <cr lf>
<
where:
sid (Source Identifier) is the returned ID, and is the same as the tid in the input
command message to which the IP acknowledgment is responding.
date is the current year, month, and day in the SSU-2000 in the format:
YY-MM-DD.
time is the current hours, minutes, and seconds timestamp information in the
SSU-2000 in the 24-hour format: HH-MM-SS.
IP is the in-process response message that the SSU-2000 sends in response to
a command only if the SSU is unable to respond to the command within two
seconds. The SSU sends the requested response in full when the data is
available.
ctag (Correlation Tag) field is a six-digit alpha-numeric message identifier code
that is received with the command and returned in the response, for correlation of
message and response within the operating system.
The IP acknowledgment response always terminates with the less-than
character (<). The semicolon appears after the requested output response
message is sent.
Output Response Message Conventions
The output response indicates whether the SSU-2000 complied with (COMPLD) or
denied (DENY) the input command.
COMPLD Output Response Message Conventions – If the message is received
correctly and can be processed by the SSU-2000 within two seconds, the complied
message is sent with data that was requested in the input command message. The
requested data is included in the response message lines and is always enclosed in
quotation marks.
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