Omron PROFINET NX-PNC202 User Manual page 45

Let-
Item
ter
(A) PROFINET IO Con-
troller
(B) PROFINET Coupler
Unit
(C)
*1
NX Units
(D) End Cover
(E) Third party PROF-
INET IO Controller
Software
(F) GSDML file
(G) Sysmac Studio
(H) PROFINET IO Device
*1. For whether an NX Unit can be connected to the PROFINET Coupler Unit, refer to the version information in
the user's manual for the NX Unit.
Ethernet switch
NX-series PROFINET Coupler Unit User's Manual (W623)
The PROFINET IO Controller manages the PROFINET network, monitors the
status of the IO Devices, and exchanges IO data with the IO Devices.
The PROFINET Coupler Unit is an interface that performs IO refresh communi-
cations between a group of NX Units and the PROFINET Unit over a Profinet
network.
The IO data for the NX Units is first accumulated in the PROFINET Coupler Unit
and then all of the data is exchanged with the PROFINET Unit at the same time.
You can connect up to 63 NX Units.
The NX Units perform IO processing with connected external devices. The NX IO
Units perform IO refresh communications with the PROFINET IO Controller
through the PROFINET Coupler Unit.
The End Cover is attached to the end of the IO Device Terminal.
The Third party PROFINET IO Controller Software runs on a personal computer
and it is used to configure the PROFINET IO Controller and the connected
PROFINET IO network with all IO Devices.
The GSDML file of the PROFINET Coupler Unit allows the user to configure the
IO Controller Unit and the network for I/O data exchange with the PROFINET
Coupler Unit and the NX IO System.
Use Sysmac Studio to adjust the settings of the IO Device Terminal with the con-
figuration and operation settings of the NX Units and PROFINET Coupler Unit.
The PROFINET IO Units that are coupled to the PROFINET IO Controller by
means of the PROFINET Coupler Unit.
Precautions for Correct Use
Do not make a loop connection in the communications path between Ethernet
switches. If a loop connection is made, the broadcast frame will continue to loop
around the path, creating a broadcast stream. This will place a high load on the net-
work and may cause unstable communications.
An example of a loop connection in the communications path is shown below.
Ethernet switch
Precautions for Correct Use
This system cannot detect that the NX-PNC configuration data and PROFINET set-
ting data are different because NX unit data size is fixed In/Out 512byte.
Check the user program, data and parameter settings for proper execution before you
use them for actual operation.
2 Features and System Configuration
Description
PROFINET Terminal
2
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