Leuze electronic HFU 4520D Short Description page 10

Function SCAN Barcode and EDIT RFID
This special and unique function reads a released Barcode /2D (3 trials) per activation (Trigger button) and
writes the read information to the next Transponder into the defined memory slot(parameters). Start of Write
op again with trigger button. In any case the device comes back with a message (success/ failure) onto
Display / Interface. The sequence is fixed, an interrupt is only possible with C. All parameter settings can be
found in the sub menus inside the system area/barcode and RFID (see menu structure).
Function SCAN ALL
This function is a combination of the functions READ Barcode and READ RFID.
The device tries after activation first to read a released transponder, 3 trials (Info on Display) and
after that without a success a released Barcode. Again the info is on the display and on the interface.
After the 3 trials without any success an error message (NoRead) is shown on Display / interface.
After a successful read (Transponder or Barcode) the operation is finished and can be started again with
activation. All parameter settings can be found in the sub menus inside the system area/barcode and RFID
(see menu structure)
Further supported possibilities for interaction with the PLC system via command and interface
1. Text message onto Display
With the command "MD" and directly attached ASCII-characters you can send a message with 16
characters onto the display of the device. The message has to be receipt at the device with pressing the
Trigger button/OK before the device is back in work mode
2. Accoustic signal
With the command „BP1" / „BP2" you can activate a deep /high acoustic signal for 1s, for an easy feed
back from PLC to device
3. Function pre select
All provided functions of the device can be pre selected from the PLC with the command „FC"(with
acknowledge from user) or "FCx"(without any action from user) , e.g. to proceed application dependent
process steps.
The command "FC1(x)" selects function"SCAN Barcode", "FC2(x)" function „SCAN Barcode-EDIT RFID";
"FC3(x)" the function"SCAN RFID", "FC4(x)" function"EDIT RFID" and "FC5(x)" the function"SCAN All".
The selection is shown on the display and when using "FC" activated with the Trigger button.
4. Pre defined Data for writing onto Transponders
With the command "W" you can send Data for Writing onto any transponder via interface to the HFU,
reasonable in combination with the function selection FC4 (x).
Pressing the Trigger button activates the Write operation directly.
The command structure of the W- command is the same as known from the fix mounted RFID-devices.
5. Ready signal / alive sign
With the command "?" a ready signal and the state of the device can be detected. The device comes
back (activate Messages) with "SFC0" when no function is selected, "SFC1" with selected function 1
(SCAN Barcode) etc. (see no 3.)
Note: Please combine Commands and Data (characters or numbers) directly (without space between) into
One single telegram, enclosed of the telegram prefix/suffix
Short description HFU 4520D Leuze electronic Page 10