C.5 Packet Structure; C.5.1 Start Of Packet - Comtech EF Data SLM-5650A Installation And Operation Manual

SLM-5650A Satellite Modem
Appendix C
C.5 Packet Structure
Start of Packet
<
ASCII code 60
(1 character)
Example:
<0135/TFQ=70.2345{CR}
Start of Packet
>
ASCII code 62
(1 character)
Example: >0654/RSW=32{CR}{LF}
C.5.1 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.
Target Address Address Delimiter
/
ASCII code 47
(4 characters) (1 character)
Target Address Address Delimiter
/
ASCII code 47
(4 characters) (1 character)
Controller-to-Target
Instruction Code Code Qualifier
= or ?
ASCII codes 61 or
63
(3 characters) (1 character)
Target-to-Controller
Instruction Code Code Qualifier
=, ?, !, or *
ASCII codes
61, 63, 33, or 42
(3 characters) (1 character)
C–3
Revision 8
MN-SLM5650A
Optional Arguments End of Packet
Carriage Return
ASCII code 13
(n characters) (1 character)
Optional Arguments End of Packet
Carriage Return,
Line Feed
ASCII codes 13,10
(From 0 to n
characters) (2 characters)