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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