turck TN-UHF AUS-CDS Series, Instructions For Use Manual

Page: 14 / 225

Product Description
Functions and operating modes
14
Hans Turck GmbH & Co. KG | T +49 208 4952-0 | F +49 208 4952-264 | more@turck.com | www.turck.com
4.4 Functions and operating modes
The devices operate with an integrated or external antenna (TN-UHF-Q300…) or only with an
external antenna (TN-UHF-Q180L300…). The devices enable passive UHF tags to be read or
written in single and multitag operation. For this the devices form a transmission zone that
varies in size and range according to the tags used and the operating conditions of the
application. Refer to the data sheets for the applicable maximum read/write distances. The
devices can be fully tested, configured and parameterized from a PC using the specified
software tools.
The integrated RFID interfaces transfer data between the RFID level and the controller level.
The devices can be used as an EtherNet/IP device, Modbus TCP Turck slave, or PROFINET RT
device. The devices can also be used as masters in the Modbus TCP fieldbus system.
The device enables the execution of different commands such as Inventory (single-tag and
multitag applications), read, write and password protection. Additional functions are provided
for optimizing the speed, the self triggering of the system, as well as for backup and restore op-
erations. In every write or read cycle, up to 128 bytes can be transferred on each channel to the
controller. The data must be fragmented in order to transfer more than 128 bytes.
Sensors and actuators can be connected to the configurable digital channels. Up to four 3-wire
PNP sensors or two PNP DC actuators with a maximum output current of 0.5 A per output can
be connected. The total output current of all devices connected to the DXP channels must not
exceed max. 1 A.
The device can perform autonomous controller and diagnostics functions in order to reduce
the workload of the controller. The devices can be programmed using the IEC 61131-3 compli-
ant CODESYS 3 programming software.
4.4.1 Operating frequency
The Turck UHF system uses nationally specified transmission frequencies for the communica-
tion between the tags and read/write heads. These national operating frequencies for UHF are
the frequency ranges that are individually specified by the national regulation bodies.
The operating frequency of the devices in the UHF band is for example 865…868 MHz for
Europe and 902…928 MHz for the USA. The BL ident read/write heads in the UHF band can
therefore only be used in the countries they are intended for and must not be put into opera-
tion outside of these regions. As the BL ident UHF tags do not radiate their own radio waves,
these are suitable for use worldwide.
Turck offers different tag variants that are specially designed and optimized for national fre-
quency bands in order to achieve as large a communication range as possible. Wide-band
multi-range tags for international use are also available as an alternative.
The various Turck read/write heads support the following operating frequencies:
n
865…868 MHz (e.g. for Europe, Turkey and India)
n
866…868 MHz (e.g. for Russia)
n 902…928 MHz (e.g. for USA and Canada)
n
920…925 MHz (e.g. for China and Singapore)
n
902…907.5 MHz and 915...928 MHz (e.g. for Brazil)
n
917…920.8 MHz (e.g. for Korea)
The relevant national specifications for UHF such as frequency range, output and the status of
any national regulations can be obtained from the Internet at:
http://www.gs1.org/docs/epcglobal/UHF_Regulations.pdf
For more detailed information please contact the regulation authorities of the country where
you wish to use the UHF RFID system.
HF RFID systems can be run parallel to UHF RFID systems in an installation.