Protocol description ASCII, SECS/HSMS
Customer manual
Version 1.2
LFM LP Reader 15.01.2019
Page 45 of 119
HERMOS AG
Gartenstrasse 19 Tel. +49(9279) 991-0
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10.4.2 R – Automatic read
By assigning the external input, an automatic read operation can be triggered.
The command "R" sends the read data to the host. The host then has to confirm the message.
Depending on the setting of the reader (parameter 1: readmode), the reader reads the following page s:
Read Mode:
0 Reading the page defined in parameter 2
1 sequential reading of a transponder to the end character
('E' - end character or 'F' empty) in ID bit 0 ... 3
2 Reading the entire transponder (all pages)
When reading several pages (par. 1: readmode "tag" or "everything") the command is repeated for each
read page. The last package contains the command 'R' and the reader ID.
The host expects a confirmation of the read data. If there is no confirmation from the host, the
command is repeated. (Par.5: 'RS232 delay time', par.6: 'RS232 maxrepeat').
If a reading is not possible, the reader automatically repeats the reading with the set parameters.
(Par.3: 'r / w delay time', par.4 'r / w maxrepeat').
If no reading is possible, the reader sends the error message 'no tag (4)' to the host.
The delay time for the presence sensor can be set (parameter 0: 'sensor delay').
An automatic reading is only possible if all messages to be confirmed have been confirmed by the
previous reading or the waiting time (par.6: 'RS232 repeattime') has elapsed after the last transmission.
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