Comtech EF Data HPOD - Packet Structure

HPOD C-, X-, Ku-Band High-Power Outdoor Amplifier Revision 6
Serial-Based Remote Product Management MN/HPOD.IOM
5–5
All bytes within a packet are printable ASCII characters, less than ASCII code 127. In this context, the Carriage Return and Line Feed
charactersareconsideredprintable.
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All messages from Controller‐to‐Target require a response, with one exception: This will be either to return data that has been
requestedbytheControll
er,ortoacknowledgereceptionofaninstructiontochangetheconfigurationoftheTarget.Theexceptionto
thisiswhentheControllerbroadcastsamessage(suchasSetTime/Date)usingAddress0,whentheTargetissettoEIA‐485mode.
5.3.4 Packet Structure
Controller-to-Target (Issued Command or Query)
Start of Packet Target Address Address Delimiter Instruction Code Code Qualifier Optional Arguments End of Packet
<
ASCII code 60
(1 character)
0000 (default)
(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)
PacketExample: <0412/MUT=1[cr]
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Target-to-Controller (Response to Command or Query)
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) (0 to n characters)
Carriage Return
ASCII code 13 or 10
(2 characters)
PacketExample: >0412/MUT=1[cr][lf]
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Detaileddescriptionofthepacketcomponentsfollow.
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