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2-9
2 Installing Ethernet Networks
NY-series Industrial Panel PC / Industrial Box PC Built-in EtherNet/IP Port User’s Manual (W563)
2-2 N
etwork In
st
all
ation
2
2-
2-4 Pr
eca
utions When Inst
alling
an
d Connecting Ethernet
S
w
itches
•
Do not ground the Ethernet switch in the same location as a drive-system component, such as an
inverter.
•
Always use a dedicated power supply for the Ethernet switch’s power supply. Do not use the same
power supply for other equipment, such as an I/O power supply, motor power supply, or control
power supply.
•
Before installation, check the Ethernet switch’s environmental resistance specifications, and use an
Ethernet switch that is appropriate for the ambient conditions. Contact the Ethernet switch manufac-
turer for details on Ethernet switch’s environmental resistance specifications.
•
To connect Ethernet switches with twisted-pair cables, observe the followings:
Connect an MDI port to an MDI-X port with a straight cable.
Connect two MDI ports or two MDI-X ports with a cross cable.
Note
It is very difficult to distinguish cross cables and straight cables by appearance. Incorrect cables will cause
communications to fail. We recommend cascade connections with straight cables whenever possible.
•
Some Ethernet switches can automatically distinguish between MDI and MDI-X. When this kind of
Ethernet switch is used, straight cable can be used between Ethernet switches.
Precautions for Correct Use
Precautions for Correct Use
Adjust the built-in EtherNet/IP port’s link settings to match the communications settings of the
connected Ethernet switch. If the settings do not match, the link will be unstable and prevent nor-
mal communications. The following table shows the allowed settings for each Ethernet switch
communications mode. (Auto-Nego: Auto negotiation, Full: Full duplex, Half: Half duplex)
Best = Recommended; OK = Allowed; --- = Not allowed.
2-2-4
Precautions When Installing and Connecting Ethernet Switches
Precautions When Installing Ethernet Switches
Ethernet Switch Connection Methods
Ethernet switch
Built-in EtherNet/IP port
Auto-
Nego
10 Mbps (fixed)
100 Mbps (fixed)
1,000
Mbps
(fixed)
Full
Half
Full
Half
Full
Auto-Nego
Best
---
OK
---
OK
---
10 Mbps (fixed)
Full
---
OK
---
---
---
---
Half
OK
---
OK
---
---
---
100 Mbps (fixed)
Full
---
---
---
OK
---
---
Half
OK
---
---
---
OK
---
1,000 Mbps (fixed) Full
---
---
---
---
---
Best
Cross cable
Straight cable
Ethernet
switch
Ethernet switch
MDI port
MDI-X port (cross)
Ethernet
switch
Ethernet
switch
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