Protocol description ASCII, SECS/HSMS
Customer manual
Version 1.2
LFM LP Reader
15.01.2019
Page 28 of 119
HERMOS AG
Gartenstrasse 19
Tel. +49(9279) 991-0
D-95490 Mistelgau
Fax. +49(9279) 991-100
7.6.2 Test push button
If the button is held pressed for a defined time (
), the status of the button is changed.
If the state changes from "Off" to "On", the test mode Read is started when the Test push button is enabled
(
). If the push-button is then held without interruption for a further defined period of time (
), it switches to the Write test mode. If the state of the button changes from "On" to "Off", the
test mode Read or Write is terminated. The current state of the test mode is indicated by a unique status
LED (
Status LEDs
Status LEDs:
The status LED is a tri-colour/RGB LED. The white or blue status LED indicates the status of the test
mode. If the reader is in maintenance mode or the reading test mode is running, the white status LED
flashes at about 1 Hz in reading testmode and 2 Hz in maintenance mode. If the reader is in maintenance
mode and the writing test mode is running, the blue status LED flashes at about 1 Hz. If the reader is in
normal operation mode, the green status LED is permanently shining (
).
Test LEDs:
The test LED is a tri-colour/RGB LED. The red and green Test LEDs are used for the reading and writing
feedback in test or polling mode.
If the read or write process is successful, the green test LED remains permanently lit. If the read or write
process fails, the red test LED shines.
In normal operation mode the red and green test LEDs are used for the last reading and writing feedback.
In this mode the red or green test LED will light for 5 seconds (
) after the last reading.
Tuning LEDs:
The tuning LED is a tri-colour/RGB LED. The red and green tuning LEDs are used for the tuning feedback.
After a successful antenna tuning, the green tuning LED is switched on for 5 seconds (
). If no
valid antenna tuning is found during antenna tuning or if an invalid tuning is detected during a read operation,
the red tuning LED flashes quickly for 5 seconds (
->parameter 84 and 85
). During automatic antenna tuning,
the blue tuning LED flashes.
After a powerup reset, the Tri-Colour LEDs undergo a short self-test and then display the set communication
protocol for one second:
SECS: The red status LED goes on briefly
ASCII: The red test LED goes on briefly
RS232 connection
The serial interface is implemented as a Sub-D plug connector (9-pin, female). A serial connection line
(1:1 circuit) can be used.
PIN
Signal
1
NC