Omron NE1A-SCPU01 - 07-2009 Operation Manual page 94

Wiring
Note
NE1A-series
Controller
Switching
hub
Auto-negotiation
10 Mbps Full
Half
100 Mbps Full
Half
Ethernet Connectors
Note
Connecting the Cable
!Caution Turn OFF the power to the NE1A-series Controller before connecting or dis-
!Caution Allow enough space for the bending radius of the twisted-pair cable as shown
60
NE1A-series Controller link settings must match the communications mode
settings of connected switching hubs. If they do not match, links will be unsta-
ble and normal communications will not be possible. For EtherNet/IP I/O com-
munications (tag data link communications) with an EtherNet/IP standard
originator, it is recommended that auto-negotiation or 100M full-duplex com-
munications be set for the Controller and the switching hubs.
Auto-
negotiation
Full
Recommended Not connectible Connectible
Not connectible Connectible
Connectible Not connectible Connectible
Not connectible Not connectible Not connectible Recommended
Connectible Not connectible Not connectible Not connectible Connectible
The following standards and specifications apply to the connectors for the
Ethernet twisted-pair cable.
• Electrical specifications: Conforming to IEEE802.3 standards.
• Connector structure:
Connector pin
1 Transmission data +
2 Transmission data –
3 Reception data +
4 Not used.
5 Not used.
6 Reception data –
7 Not used.
8 Not used.
Hood Frame ground
The NE1A-series Controller Ethernet ports support the auto-MDI/MDI-X func-
tionality, so either a straight or cross cable can be used.
connecting twisted-pair cable.
in below.
10 Mbps
Half
Not connectible Connectible
Not connectible Not connectible Not connectible
Not connectible Not connectible
RJ45 8-pin Modular Connector
(conforming to ISO 8877)
Signal name Abbr.
TD+
TD–
RD+
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RD–
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FG
Section 3-2
100 Mbps
Full Half
Not connectible
Signal direction
Output
Output
Input
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Input
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