Confirmation Response; Error Response; End Of Message; Command Ending - Comtech EF Data UT-4500 Series Installation And Operation Manual

UT-4500 Series C- and Ku-Band Up Converters
Serial Interface Operation
8.6.4

Confirmation Response

A confirmation will change the start character, and echo the Device Address and
Command. Any requested data is appended to the Command.
• EXAMPLE: >DEV/COM_xxx{cr}{lf}]
8.6.5

Error Response

If a converter cannot execute a Command or detects a protocol violation, an
error response is generated. An error is flagged by changing the "/" command
designator in the response to a "?".
Following the "?" error symbol are two characters which are unique error
symbols useful for computer analysis. The two error symbols are followed by a
text string explaining the error for the convenience of a human operator. This
document uses "ER" for the generic case examples response.
• EXAMPLE:
8.6.6

End of Message

End of message strings were devised in such a way that an orderly screen
presentation would result when converters are controlled by simple ASCII
terminals.
8.6.6.1

Command Ending

The end of message for a command is a carriage return. This document uses
"{cr}" for the carriage return.
• EXAMPLE:
8.6.6.2

Response Ending

End of message for a response is a carriage return ({cr}), line feed ({lf}), and a
right bracket (]): "{cr}{lf}]"
• EXAMPLE:
>DEV?COM ER Error Message {cr}{lf}]
<DEV/COM_{cr}
>DEV/COM_{cr}{lf}]
8–8
MN/UT4500.IOM
Revision 3