819XX_MAN_GRM-H_11-2022_ENG_pag. 22
Some basic settings can be set using the key on the
front of the device.
The complete configuration can be completed via the
“Gefran NFC” smartphone application, via PC with
GF_eXpress software or via IO-Link. Configuration
via Smartphone and with cable from PC can also be
performed with the device not powered.
The Gefran NFC application can be downloaded
from the Play Store for Android devices and from the
AppleStore for iOS devices.
NFC (Near Field Communication) must be enabled on
the smartphone. It can be enabled from the settings
(or quick settings in the drop-down menus) commonly
the logos are the following:
or
This technology permits wireless exchange of data
from one device to another (Smartphone <- ->
GRM-H), only when they are at close range. The
same technology is used daily to read TagNFC,
“Contactless” payment with credit cards and
smartphones, etc. Data is exchanged by placing the
smartphone NFC antennas a few mm from the Gefran
NFC Dongle (see table "7.5. Accessoires" on page
93).
The NFC Dongle must be inserted into the microUSB
port on the front of the device. All
GRM-H devices are enabled to read
and write data via NFC Dongle. The
dongle can be ordered as an accessory
or directly in the GRM-H order code.
It can be removed after use or left
inserted. The NFC Dongle is not
the device memory, but an antenna, which allows
communication at close range.
The application can read/write configuration
recipes, model information and diagnostic data.
The application allows you to open recipes on the
smartphone memory, read them from the device and
retransmit them to it or similar devices. Recipes in
.gfe format can also be saved and forwarded (Gefran
format common to GF_eXpress recipe files).
All the reading and writing operations can be
performed with the device powered or NOT
powered.
This is possible thanks to the powered supplied by
the smartphone to the internal GRM-H memory during
NFC connection. Recipes are written on a GRM-H
device in two ways:
Powered Device: the recipe is written via the
smartphone in a portion of the device memory
dedicated to writing via NFC. Immediately afterwards,
the GRM-H device automatically checks the
validity and consistency of the data transmission.
These checks ensure that, even in the event of
communication disturbances or interruptions, the
GRM-H and the information within it are protected.
If the check fails, the transmitted data is ignored
and the GRM-H continues to work with the original
recipe. If the checks are passed, the device loads the
recipe transmitted from the NFC write memory to the
memory that contains the recipe used for operation.
To know the results of the data transmission, check
the section "4. LED" on page 26.
Device NOT powered: the recipe is written via
the smartphone in a portion of the device memory
dedicated to writing via NFC. At first start-up, the
checks described above are carried out in the case of
“Device powered”.
3. CONFIGURATION
3.1. Device configuration
3.1.1. Gefran NFC application
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