HERMOS AG
Gartenstraße 19 • 95490 Mistelgau
Phone: +49 9279 991 - 0
E-mail: rfid@hermos.com
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9. Operating
9.1 Operating personnel
The device should only be operated by specially trained personnel. If you have any
doubts about the required qualifications, please contact the manufacturer.
The operation of the device without special expertise can result in damages to the
device or on connected devices.
9.2 Protocol change
9.2.1 General
To communicate with a connected host system, the reader supports ASCII or SECS /
HSMS protocols. The protocol selection takes place by means of automatic protocol
recognition.
The currently set protocol is displayed on the status LED during the boot process.
SECS: The red LED goes on briefly after self test
ASCII: The yellow LED goes on several times
9.2.2 Automatic protocol detection
The reader automatically adjusts to the protocol used by checking and evaluating the first
message after a reset. The interface is changed accordingly when the protocol is changed
and reinitiali- zed. This process can take several seconds. Already sent messages are lost.
The newly recognized protocol is used for further communication. A renewed change is
only pos- sible after another reset. Automatic protocol detection can be disabled by setting
parameter 98 (0x62).
If the reader receives undefined or random characters, this may result in an
accidental protocol change.
Automatic protocol detection can be deactivated in parameter 98 (0x62).
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