Premier Mounts CDM-600 사용자 설명서

CDM-600 Satellite Modem 

Revision 7 

Remote Control  

MN/CDM600.IOM 

16–3 

 

Controller-to-target: 
 

Start of Packet 

Target Address  Address  

De-limiter 

Instruction 
Code 

Code 
Qualifier 

Optional 
Arguments 

End of Packet 

< 
ASCII code 60  
 
(1 character) 

 
 
 
(4 characters) 

/ 
ASCII code 47 
 
(1 character) 

 
 
 
(3 characters) 

= or ?  
ASCII code 
61 or 63 
(1 character) 

 
 
 
(n characters) 

Carriage 
Return 
ASCII code 13 
 
(1 character) 

 
Example: <0135/TFT=1[CR] 
 
Target-to-controller: 
 

Start of Packet 

Target 
Address 

Address  
De-limiter 

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 code 61, 
63, 33 or 42 
(1 character) 

 
 
(From 0 to n 
characters) 

Carriage Return, 
Line Feed 
ASCII code 13,10 
(2 characters) 

 
Example: >0654/RSW=32[CR][LF] 
 
Each of the components of the packet is now explained. 
 

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. 
 

Up to 9,999 devices can be uniquely addressed. In EIA-232 applications this value is set 
to 0. In EIA-485 applications, the permissible range of values is 1 to 9999. It is 
programmed into a target unit using the front panel keypad. 
 
Important note: The controller sends a packet with the address of a target - the destination 
of the packet. When the target responds, the address used is the same address, to indicate 
to the controller the source of the packet. The controller does not have its own address.