Protocol description ASCII, SECS/HSMS
Customer manual
Version 1.2
LFM LP Reader
15.01.2019
Page 46 of 119
HERMOS AG
Gartenstrasse 19
Tel. +49(9279) 991-0
D-95490 Mistelgau
Fax. +49(9279) 991-100
10.4.3 W
– Write data
The command W starts writing a defined data area of a transponder.
If there is no transponder in the write range of the antenna, the reader sends an error message (error 4
- no transponder).
Host
Device
CMD
Reader-ID
Page
Data
W
1 Byte
2 Bytes
16 Bytes
Device
Host
CMD
Reader-ID
w
1 Byte
If
the describing of the tag fails, the reader repeats the writing operation several times before sending
an error message. The number of repetitions is defined in parameter 4 ('r / w maxrepeat'). If writing is
still not possible, the reader sends the error message 'no tag (4)' to the host after the repetitions have
been carried out
.
If the sensor check is activated (parameter 1: readmode), the assignment of the external input is
checked before the start of the write process by the host. The write process is started only when the
sensor is busy, otherwise the error message 'no tag (4)' is sent
.
10.4.4 G Query parameter
With the command "G" the values of all public parameters of the device can be queried
.
Host
Device
CMD
Reader-ID
G
1 Byte