beautypg.com

1 packet structure, Packet structure, Start of packet – Comtech EF Data CSAT-5060 User Manual

Page 55

background image

C-Band Transceiver

Revision 1

Remote Control

MN/CSAT5060.IOM

6–3

6.2.1

Packet Structure

Table 6-3. Master-to-Slave:

Start of
Packet

Device
Address

Address
Delimiter

Instruction
Code

Code
Qualifier

Optional
Arguments

End of
Packet

Character

<

/

= or ?

Carriage
Return

ASCII
Code


60


47


61 or 63

13

#
Characters

1

4

1

3

1

n

1


Example: <0135/UAT=12.25{CR}

Table 6-4. Slave-to-Master:

Start of
Packet

Device
Address

Address
Delimiter

Instruction
Code

Code
Qualifier

Optional
Arguments

End of Packet

Character

>

/

=, ?, !, or *

Carriage Return,
Line Feed

ASCII
Code

62

47


61, 63, 33
or 42


13, 10

#
Characters

1 4 1

3 1

From 0 to
n

2


Example: >0135/UAT=07.75{CR}{LF}

6.2.1.1

Start Of Packet

Master to Slave: This is the character:

< = (ASCII code 61)

Master to Slave: 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.