Protocol description ASCII, SECS/HSMS
Customer manual
Version 1.2
LFM LP Reader 15.01.2019
Page 38 of 119
HERMOS AG
Gartenstrasse 19 Tel. +49(9279) 991-0
D-95490 Mistelgau Fax. +49(9279) 991-100
Packet end
The end of the packet contains an end character and a checksum consisting of 4 characters.
End character ASCII end character <CR> (hex 0x0D).
Checksum 1 High byte XOR logic of all data (packet header, data and end character).
(ASCII character "0"…"F")
Checksum 2 Low byte XOR logic of all data (packet header, data and end character).
(ASCII character "0"…"F")
Checksum 3 High byte addition of all data (packet header, data and end character).
(ASCII character "0"…"F")
Checksum 4 Low byte addition of all data (packet header, data and end character).
(ASCII character "0"…"F")
The checksum is not necessary when using the TCP/IP interface.
(No transmission) The end character is only transmitted.
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