4-35
4. TNU functions
TNU
4.
EtherNet/IP,DeviceNet communication specifications
Communication standard
EtherNet/IP
Communication speed
10/100Mbps
Communication method
Conforming to IEEE802.3, IEEE802.3u
Transmission channel type
Line/star/tree
Communication cable length
Distance between nodes: 100 m
Communication cable
Ethernet cable of category 5 or above
◦
EtherNet/IP link point count
The link point (word) count usable with EtherNet/IP is a maximum of 120. Plan your design so
that the total link point count of devices connected to TACnet is no more than 120.
List of input mode link point counts
IO
Simple DVC
Half DVC
Full DVC
Required link point count
1
3
8
14
Communication standard
DeviceNet compliant
Communication speed
125kbps/250kbps/500kbps
Communication method
DeviceNet communication
Transmission channel type
Multi-drop method, T-branch
Communication cable length
Thick cable
500 m (at 125 kbps)
250 m (at 250 kbps)
100 m (at 500 kbps)
Thin cable
100 m (at all communication speeds)
Communication cable
DeviceNet dedicated cable
◦
DeviceNet link point count
The I/O ports (words) usable with DeviceNet is limited to 120. Plan your design so that the total
link point count of devices connected to TACnet is no more than 120.
4-1-1
EtherNet/IP communication overview
4-1-2
DeviceNet communication overview
4-1
Communication overview
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