We recommend the use of shielded twisted 4-pair CAT5e (10/100 Mbps) cables for the following connection types in a Quantum EIO system:
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the between 140NOC78•00 modules and a 140CRP31200 remote I/O head module on the local rack
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the connection between 140NOC78•00 modules and on the main ring
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the connection between a 140NOC78000 distributed I/O head module and an or
NOTE: We recommend that copper shielded twisted 2-pair CAT5e (10/100 Mbps) and CAT6 (10/100/1000 Mbps) cables not be used. Rather, we recommend that you use copper shielded twisted 4-pair CAT5e (10/100 Mbps and CAT6 (10/100/1000 Mbps) cables.
NOTE: We recommend the use of CAT6 (10/100/1000 Mbps) copper shielded twisted 4-pair cables for the connection between a 140NOC78100 control head module and a .
NOTE: Regarding shielded twisted 4-pair CAT5e (10/100 Mbps) cables, we recommend ConneXium 490NT•000•• cables.
Connections Between Devices
This example shows the maximum cable lengths between remote I/O and distributed I/O devices and a control network in a Quantum EIO installation.
NOTE: Use copper cable for distances less than or equal to 100 m. User fiber cable for distances greater than 100 m.
1
140CRP31200 remote I/O head module to manage remote I/O devices
2
140NOC78000 distributed I/O head module to manage distributed I/O devices
3
140NOC78100 control head module to provide transparency between the device network and the control network (10)
4
DRSs (with copper and fiber ports): These DRSs extend the distance between devices (up to 15 km).
5
Ethernet distributed I/O sub-ring
6
fiber portion of the main ring
7
copper portion of the main ring
8
Ethernet remote I/O drops on the main ring
9
DRS (with copper ports): This DRS serves to extend the distance between other devices.
10
control network 
