Rockwell Automation 1788-CN2FF ControlNet to Foundation Fieldbus H1 Linking Device Installation Instructions - Manual (Page 7)

ControlNet-to-Foundation Fieldbus H1 Linking Device 7
Publication 1788-IN051D-EN-P - February 2004
1788-CN2FF Hardware Description
Figure 1 ControlNet-to-Foundation Fieldbus Linking Device
Installation Considerations
The 1788-CN2FF is designed to be mounted on a 35 mm DIN rail. The device dimensions
are 4.375 x 4.375 and is 4.5 inches high. ControlNet connectors are on top of the unit, allow
1.5 inches for the connectors.
The CN2FF supports redundant media and a ControlNet network access port (NAP). There
are 2 (A, B) BNC ControlNet connectors. We recommend using the “A” BNC connector
when setting up a single network and then using the “B” connector for the second
(redundant) network. It does not matter, but when you are working with redundant networks,
the industry tends to refer to the primary network as A and the secondary network as B.
The ControlNet status LEDs on the front of the module display the current status of each of
the redundant media channels. The rotary switches are used to set the ControlNet network
address. You can write the network address in the space provided on front of the device.
The module has two separate Fieldbus ports which supports 2 Fieldbus networks. The power
connections are used to supply power to the CN2FF.
IMPORTANT
Make sure that the power to the network is off
when connecting the module.
43163
1. ControlNet A and B BNC
Connectors, to support single or
redundant network topologies.
2. Case/Enclosure
3. ControlNet Network Status LEDs
4. Non-isolated ControlNet Network
Access Port (NAP)
5. Power Supply Connector
6. DIN Rail Clip
7. ControlNet Module STATUS LED
8. Fieldbus Connectors
9. Network Address Switches
(under cover)
10. Not Used
2
3
4
1
9
8
1
7
6
5
10