ICP DAS USA 8830 User Manual

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Appendix B: DCON protocol 
 
The DCON protocol is a request/reply communication protocol for the I-7000/8000/87K 
series I/O modules, and uses a simple ASCII format such as $AAN, $AASi6, #AAN, 
#AASiCj,..., etc. The protocol format is defined as follows: 
Basic Command Format 
Command Format: 
Leading Character 
Module Address 
Command 
[CHKSUM] 
CR 
 
 
Response Format: 
Leading Character 
[Module Address] [Data] 
[CHKSUM] 
CR 
The Leading Character
 can 
include ‘@’, ‘#’, ‘$’, ‘%’, ‘~’, ‘!’ 
Checksum
   A 2-character checksum and is present when the checksum option is enabled.     
Address  0x00 ~ 0xFF 
CR
   
Carriage return (0x0D) 
 
8430/8830/8KE4/8KE8 User’s manual, Jan 2005, Version 1.0, 8MS-002-10    -----    70