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MBT-5000 L-Band Up/Down Converter System
Serial-based Remote Product Management
7.2.2
Packet Structure
The exchange of information is transmitted, Controller-to-Target and Target-to-Controller, in packets. Each packet contains a finite
number of bytes consisting of printable ASCII characters, excluding ASCII code 127 (DELETE).
In this context, the Carriage Return and Line Feed characters are considered printable. 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 Controller, 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.
Start of Packet
<
ASCII code 60
(1 character)
Packet Example:
Start of Packet
>
ASCII code 62
(1 character)
Packet Example:
Detailed description of the packet components follow.
Controller-to-Target (Issued Command or Query)
Target Address
Address Delimiter
0000 (default)
/
ASCII code 47
(4 characters)
(1 character)
<0000/RSH=30[cr]
Target-to-Controller (Response to Command or Query)
Target Address
Address Delimiter
0000 (default)
/
ASCII code 47
(4 characters)
(1 character)
>0000/BBU=107[cr][lf]
Instruction Code
Code Qualifier
= or ?
ASCII codes 61 or 63
(3 characters)
(1 character)
Instruction Code
Code Qualifier
= or ?
ASCII codes 61 or 63
(3 characters)
(1 character)
7–4
MN-MBT5000
Revision 4
Optional Arguments
End of Packet
Carriage Return
ASCII code 13
(n characters)
(1 character)
Optional Arguments
End of Packet
Carriage Return
ASCII code 13
(n characters)
(1 character)
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