Table of Contents
Advertisement
RF600 system planning
4.2 Possible system configurations
4 4 .2.2
Scenario for workpiece identification
A typical characteristic of modern manufacturing scenarios is their multitude of variations.
The individual data and production steps are stored in the transponder of a tool holder or
product. These data are read by the machining stations during a production process and, if
necessary, tagged with status information. This can be used to dynamically identify which
production step is the next in the series. This has the advantage that the production line can
work automatically without the need to access higher system components. The use of RFID
therefore increases the availability of the plant.
Figure 4-3
Scenario: Workpiece identification
Features of the scenario
Transponders are attached to workpiece holders. Their spatial orientation is always identical.
With this arrangement, only a single transponder needs to be detected each time (single-
tag).
The SIMATIC RF685R reader reads the information from the transponders with its integrated
antenna or the external antenna RF680A and transfers it to the SIMATIC S7 controller.
Depending on the stored transponder information, the SIMATIC S7 controller different
control tasks, for example, automatically providing a suitable tool for an industrial robot at the
correct time.
In a metallic wireless environment or when lots of readers/antennas are mounted close
together we recommend that you do not have the readers reading permanently. Instead
execute specific read/write commands when an object/transponder is located in front of an
antenna or passes it. This "triggering" can be implemented with light barriers or beros. This
procedure reduces mutual influence/disruption of the read points and increases the
36
System Manual, 06/2019, J31069-D0171-U001-A22-7618
SIMATIC RF600
Advertisement
Table of Contents
