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1 start of packet – Comtech EF Data CTOG-250 User Manual

Page 180

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CTOG-250 Comtech Traffic Optimization Gateway

Revision 1

Serial-based Remote Product Management

MN-CTOG250

8–4

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:

<0000/TFQ=1234.5678[cr]

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)

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:

>0000/TFQ=1234.5678[cr][lf]

Detailed description of the packet components follow.

8.2.2.1 Start of Packet

Controller-to-Target: This is the character ‘<’ (ASCII code 60).

Target-to-Controller: This is the character ‘>’ (ASCII code 62).

The ‘<’ and ‘>’ characters indicate the start of packet. They may not appear anywhere else within the body of the message.