Rockwell Automation AutoMax ControlNet Communication Interface Module - Manual (Page 15)

AutoMax ControlNet Module Page 15
Publication number DSMBCN-UM001B-EN-P February 2003
NAP Port
The MBCN has a standard ControlNet NAP port to allow a transient
node to connect to the ControlNet network.
Use the NAP port on the MBCN if you want to attach a transient node to
the network and you do not want to rewire the network. Do not connect
any node to the network using both the NAP port and a coax path at the
same time. The following figure shows how to correctly connect a
transient node.
NAP Connection 1
You can also use the NAP port on the MBCN to attach the MBCN to an
existing network, by connecting to the NAP port on a node on the
existing network.
The NAP cable has 8 conductors and a shield, with RJ-45 connectors at
each end. The cables are reversed from one end of the cable to the other,
so that 1->8, 2->7, etc. Maximum cable length is 10 m.
ControlNet Connectors
Connect the MBCN to the ControlNet network using the standard
ControlNet BNC connectors.
Network Status LEDs
There is one network status (COM) LED for each network connector.
The network status LEDs display the following states, using the priority
scheme shown. If more than one condition exists, the LEDs display the
state with the highest priority.
When using redundant cabling, both LEDs should be green. One will be
brighter; this is the active channel.