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TimeHub 5500 TL1 Reference Manual
19
Commands
097-55501-02 Issue 5: June 2003
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5
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SSSSSSSSSSSS SSSS S SSSSS SSSSSSS S SSS S SSSSS
Responses
When a command is received and processed, a response is returned. The types of
responses are:
• Acknowledgement
•Normal response
• Error response
A normal or error response is returned when the TimeHub 5500 receives a
command. These types of responses include the source identifier (<sid>), the date,
the time, an M to indicate that it is a response to a command, and the correlation
tag (<ctag>) that was entered with the command.
For a rejected command, the <ctag> may not be included in the response, instead,
0 will appear in place of the <ctag>.
Acknowledgement
If a normal response or an error response cannot be sent within 2 seconds of
receipt of a command, an acknowledgment is sent. The acknowledgment codes and
their meanings are as follows:
IP (In Progress) The command has been initiated.
NA (No Acknowledgment) The command has been accepted, but control of the
processing has been lost.
If IP is sent, a normal response or an error response will follow. If NA is sent, no
further response is expected; the command must be re-sent.
The IP acknowledgement format is shown below:
IP <ctag>
The NA acknowledgement format is shown below:
NA <ctag>
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