Comtech EF Data CPA - Manual (Page 103)

CPA C-Band Solid State Power Amplifier Revision 1
Serial-based Remote Product Management MN/CPA-IN.IOM
7–3
7.4 Packet Structure
Controller-to-Target
Start of Packet Target Address Address Delimiter Instruction Code Code Qualifier Optional Arguments End of Packet
<
ASCII code 60
(1 character) (4 characters)
/
ASCII code 47
(1 character) (3 characters)
= or ?
ASCII codes 61 or 63
(1 character) (n characters)
Carriage Return
ASCII code 13
(1 character)
Example: <0412/MUT=1{CR}
Target-to-Controller
Start of Packet Target Address Address Delimiter Instruction Code Code Qualifier Optional Arguments End of Packet
>
ASCII code 62
(1 character) (4 characters)
/
ASCII code 47
(1 character) (3 characters)
=, ?, !, or *
ASCII codes
61, 63, 33, or 42
(1 character)
(From 0 to n characters) Carriage Return, Line
Feed
ASCII codes 13,10
(2 characters)
-OR-
Carriage Return, Line
Feed
ASCII codes 13,10
(3 characters)
Example: >0412/MUT=1{CR}{LF}
If it is an error message or an old remote command, ‘]’ will show at the end.
Example: >1?ATT_INVALID PARAMETER'cr''lf']
7.4.1 Start of Packet
• Controller-to-Target: This is the character ‘<’ (ASCII code 60).
• Target-to-Controller: This is the character ‘>’ (ASCII code 62).
Because this is used to provide a reliable indication of the start of packet, these two characters may not appear anywhere else within the
body of the message. The only exceptions are in command RMS and CMS where the response is “FWPWR=<19.0”.