Basic Knowledge; Function Principle Of Identification Systems; Product Description; Control Function - Balluff BIS U-6028-048-104-06-ST28 Betriebsanleitung

BIS U-6028-048-1_4-06-ST28
Processor unit
3

Basic knowledge

3.1

Function principle of identification systems

The identification system BIS U is classified as a non-
contacting system with read and write function, which not
only allows it to detect information programmed
permanently in the data carrier, but also to collect and
pass on current information.
Main components of the identification system BIS U
include:
– Processor unit
– Antennas
– Data carrier
3 4 5
2
1
1 PC
2 PLC
3
Connection to the controlling system
4 Processor unit
5 Antenna Cable
6
Antennas (max. 4)
7 Data carrier
Fig. 3-1: System Overview
The main areas of application are:
– In the production and control of material flow (e.g. in
model-specific processes, workpiece transport in
conveying systems, for acquiring safety-related data)
– In tool coding and monitoring
– In organization of tools and equipment
– In warehousing for monitoring material movements
– In transporting and conveyor technology
– in waste disposal for quantity-based fee assessment
See the "Basic UHF manual" for more
information on UHF identification systems.
www.balluff.com
3.2

Product description

– UHF RFID (for working frequencies, see chapter
Operating frequencies and radiated power on
page 13)
– Read/write distance typically up to 6 m depending on
ambient conditions and installed system components
such as antennas, data carriers, cables, etc.
– Connection option for 4 antennas
– Standard interface: 2 × PROFINET
– Service interface: 1 × RS232
– Rugged metal housing
– Control indicators for communication and status
– Data carrier types according to ISO 18000-6 type C or
6 7
EPCglobal
3.3

Control function

The processor unit is the link between data carrier and
controlling system. It manages two-way data transfer
between data carrier and antenna and provides buffer
storage.
The processor unit uses the antenna to write data from the
controlling system to the data carrier or reads the data
from the data carrier and makes it available to the
controlling system.
Controlling systems may be the following:
– a control computer (e.g. industrial PC)
– a PLC
Double bit string for asynchronous data
transmission:
If a controller does not synchronously send the data range
for updating the input/output buffer, data inconsistencies
may occur when sending more than two bytes.
Consistency of the sent data can then only be ensured by
sending the control bits in the first byte and again in the
last bytes of the input/output buffer. By comparing the two
bit strings, it can be determined whether the data is fully
updated and can be accepted.
This method affects neither the PLC cycle time nor the bus
access time. Only one byte in the data buffer for the byte
of the second bit string is required instead of using it for
data.
Class 1 Generation 2
TM
english 9