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4
Devices Required for Constructing a Network
Section 1-2
1-2
Devices Required for Constructing a Network
The basic configuration for an EtherNet/IP System consists of one switching
hub to which nodes are attached in star configuration using twisted-pair cable.
The devices shown in the following table are required to configure a network
with CS1W-EIP21 and CJ1W-EIP21 EtherNet/IP Units or the built-in EtherNet/
IP port in CJ2H-CPU
@@
-EIP/CJ2M-CPU3
@
CPU Units.
Recommended
Switching Hubs
For details on recommended devices for constructing a network, refer to 2-3-1
Recommended Network Devices.
Note
If a repeater hub is used for EtherNet/IP tag data links (cyclic communica-
tions), the network’s communications load will increase, data collisions will
occur frequently, and stable communications will be impossible. Always use a
switching hub when using tag data links in the network.
1-3
Support Software Required to Construct a Network
This section describes the Support Software that is required to construct an
EtherNet/IP network. Make the tag data link settings and Unit setup settings
for the EtherNet/IP Unit or built-in EtherNet/IP port. Both of these settings are
stored in the EtherNet/IP Unit’s non-volatile memory (See note.). Support
Software is provided for each, as described below.
Note
Unlike the Ethernet Units, the EtherNet/IP Unit’s TCP/IP settings are not
stored in the CPU Unit’s CPU Bus Unit System Setup Area. The settings are
stored in the EtherNet/IP Unit itself.
Unit Setup: CX-
Programmer
The CX-Programmer is used to set basic parameters, such as the local IP
address of the EtherNet/IP Unit or built-in EtherNet/IP port and the subnet
mask. (The CX-Programmer is included in the CX-One.)
The CX-Programmer can also be used to check if data I/O is being performed
correctly for tag data links.
(3) Switching hub
CX-One Support
Software
(2) Twisted-pair cable
100 m
max.
(1) CS1W-EIP21 EtherNet/IP
Unit for CS-series
(1) CJ1W-EIP21
EtherNet/IP Unit
CS-series
PLC
CJ-series
PLC
Ethernet (LAN) port
(1) Built-in EtherNet/IP port on
CJ2 CPU Unit
(CJ2H-CPU
@@
-EIP/
CJ2M-CPU3
@
)
CJ-series
PLC
Network device
Contents
(1) CS1W-EIP21 EtherNet/IP
Units for CS-series PLCs,
CJ1W-EIP21 EtherNet/IP
Units for CJ-series PLCs,
or built-in EtherNet/IP port
in CJ2H-CPU
@@
-EIP/
CJ2M-CPU3
@
CPU Units
These are Communications Units or built-in ports
that connect a CS-series or CJ-series PLC to an Eth-
erNet/IP network.
(2) Twisted-pair cable
The twisted-pair cable connects EtherNet/IP Units or
built-in EtherNet/IP ports to the switching hub, with
an RJ45 Modular Connector at each end.
Use an STP (shielded twisted-pair) cable of category
5, 5c, or higher.
(3) Switching Hub
This is a relay device that connects multiple nodes in
a star-shaped LAN.
Summary of Contents for CJ2H-CPU6 - REV 02-2010
Page 2: ......
Page 4: ...iv...
Page 6: ...vi...
Page 14: ...xiv...
Page 18: ...xviii...
Page 38: ...12 Network Configurator Overview Section 1 5...
Page 58: ...32 Selecting the Network Devices Section 2 3...
Page 116: ...90 Auxiliary Area Data Section 4 5...
Page 222: ...196 Message Communications Errors Section 7 6...
Page 364: ...338 Using the Backup Tool Section 13 3...
Page 402: ...376 CS CJ series Ethernet Unit Function Comparison Appendix A...
Page 404: ...378 Ethernet Network Parameters Appendix B...
Page 406: ...380 TCP Status Transitions Appendix C...
Page 452: ...426 Precautions for Using Windows XP Vista or Windows 7 Appendix G...
Page 460: ...434 Index...
Page 462: ...436 Revision History...
Page 463: ......