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Hello, are there any detailed analysis and examples of communication commands for the access control? The agreement documents are not clear.
2017-03-10 11:11
Details of the problem:

Hello, are there any detailed analysis and examples of communication instructions for the access control? The agreement documents are not clear.


Expert answer:

Example of sending from PC to control board (reading controller SN):

7E30303030303030303030303030303030FFFFFFFF19883D90010200000000006D7E

Split explanation:

7E--Command header

30303030303030303030303030303030--SN's ascii code (not important when reading sn, other commands must be entered correctly)

FFFFFFFF - The default communication password is FFFFFFFF

19883D90 - information code (actually a random number or a serial number)

010200 - The control code corresponding to the instruction (see the command table below)

00000000--The length of the data, there is no data packet part, here is all 0.

6D - Checksum

30303030303030303030303030303030FFFFFFFF19883D9001020000000000 and check the low byte

7E - end of command

Example of control board sending to PC (read controller SN response):

7E1906677946432D38393230413235303530323835FFFFFFFF3102000000001046432D38393230413235303530323835087E

Split analysis:

7E--Command header

19066779 - The network logo sent by the software, and the software will return whatever it sends.

46432D38393230413235303530323835- the sn ASCII code of the controller itself

FFFFFFFF - communication password

310200 - Command response code (check command table)

00000010 - The length of the data packet part

46432D38393230413235303530323835 --- Part of the content of the data packet (here is the read sn command, so the data packet part is the ascii code of sn)

08 - Sum check

7E - end of command


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