HERMOS LFM 4x - P - Set Parameter

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Gartenstraße 19 • 95490 Mistelgau
Phone: +49 9279 991 - 0
E-mail: rfid@hermos.com
LFM 4x Reader Rev1.4
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Customer manual
LFM 4x Reader
RFID
WE GENERATE SOLUTIONS
10.4.6 P – Set parameter
The command „P“ can be used to change the value of individual parameters. After a
parameter has been successfully changed, the reader sends a confirmation message.
Host  Device
CMD
Reader-ID
Parameter No.
Parameter Value
P
1 Byte
1 Byte
2 Bytes
Device  Host
CMD
Reader-ID
p
1 Byte
Depending on the Factoryparameterset selected, the data elements parameter number and
parameter value must be interpreted differently. For single-digit hexadecimal parameter no. the
following interpretations must be observed:
In the standard ASC-I1 protocol mode the data element „Parameter Value“ with decimal values
(00-99) has to be used. The values for the data item „Parameter No.“ are hexadecimal values
(0-F).
Only in ASC-W1 mode (Factoryparameterset 3) the data elements „Parameter No.“ and
„Parameter Value“ have to be used as hexadecimal values (0-F or 00-FF).
For two-digit hexadecimal parameter numbers (Parameter No.), the
parameter value must always be sent in two digits hexadecimal.