HERMOS AG
Gartenstraße 19 • 95490 Mistelgau
Phone: +49 9279 991 - 0
LFM 4x Reader Rev1.4
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55
Customer manual
LFM 4x Reader
RFID
WE GENERATE SOLUTIONS
10.4.10 H
– Heartbeat
The command „H“ sends a heartbeat request to the reader.
The reader responds with its serial number and a response code.
Host
Device
CMD
Reader-ID
H
1 Byte - also Reader ID F allowed
Device
Host
CMD
Reader-ID
Serial number
Response-Code
h
1 Byte
4 Bytes
4 Bytes
The heartbeat function can be performed for all 4 antenna ports (1-4).
If another reader is operated as a customer variant on the RS232 port, a heartbeat can be sent
to the external reader via reader ID
„5“.
The response code is part of the protocol but is not used for this device. The response code is
always ‚0000‘.