N-Tron 710FX2 Series User Manual & Installation Manual Download

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(Revised 2012-05-01

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N-Ring

N-Ring  is  enabled  by  default,  and  the  switch  is  Plug  and  Play  for  N-Ring  except  that  initially  one  must
enable  an  N-Ring  enabled  device  to  be  the  N-Ring  Manager  for  a  given  N-Ring.    Subsequently,  N-Ring
operates dynamically upon each power up.  Using N-Tron's proprietary N-Ring technology offers expanded
ring  size  capacity,  detailed  fault  diagnostics,  and  a  standard  healing  time  of  30ms.  The  N-Ring  Manager
periodically  checks  the  health  of  the  N-Ring  via  health  check  packets.  If  the  N-Ring  Manager  stops
receiving the health check packets, it times out and converts the N-Ring to a backbone within 30ms. When
using all N-Ring enabled switches in the ring, a detailed ring map and fault location chart is also provided
on the N-Ring Manager’s web browser.  N-Ring status is also sent from the N-Ring Manager to the N-View
OPC Server to identify the health status of the ring. Up to 250 N-Ring enabled switches can participate in
one N-Ring topology.  Switches that do not have N-Ring capability may be used in an N-Ring, however the
ring map and fault location chart cannot be as detailed at these locations.

N-Link

The purpose of N-Link is to provide a way to redundantly couple an N-Ring topology to one or more other
topologies, usually other N-Ring topologies.  Each N-Link configuration requires 4 switches:  N-Link
Master, N-Link Slave, N-Link Primary Coupler, and N-Link Standby Coupler.  N-Link will monitor the link
status of the Primary and Standby Coupler links.  While the Primary Coupler link is healthy, it will forward
network traffic and the Standby Coupler link will block network traffic.  When a problem is detected on the
Primary Coupler link, the Primary Coupler link will block network traffic and the Standby Coupler link will
forward network traffic.  While the N-Link Master and Slave are in communication via the Control link,
only one Coupler link (Primary or Standby) will forward network traffic while the other Coupler link will
block network traffic.

CIP

The CIP (Common Industrial Protocol) feature allows N-Tron switches to directly provide switch
information and configuration access to Programmable Logic Controller (PLC) and Human Machine
Interface (HMI) applications via a standardized communication protocol.  For example, a PLC may be
programmed to monitor port links or N-Ring status and cause a status indicator to turn red on an HMI if a
port goes link down or if N-Ring has a fault.  CIP is formally described in ODVA Publication Number
PUB00001 (Volume 1: Common Industrial Protocol (CIP™)), and Publication Number: PUB00002
(Volume 2: EtherNet/IP Adaptation of CIP).  N-Tron provides EDS and ICO files. N-TRON_CIP_Tags.pdf
is for a particular environment, but reveals the tags available.

DHCP

The Dynamic Host Configuration Protocol (DHCP) provides configuration parameters to Internet hosts.
DHCP is built on a client-server model, where designated DHCP server hosts allocate network addresses
and deliver configuration parameters to dynamically configured hosts. DHCP is controlled by RFC 2131.
The N-Tron DHCP Switch can be configured to be a DHCP Client.  Alternately the N-Tron DHCP switch
can be configured to be a DHCP Server, a DHCP Relay Agent, or both.

For more detailed information on N-Tron DHCP features, reference:

http://www.n-tron.com/tech_docs.php

Under ‘White papers’, see. “Using DHCP to Minimize Equipment Setup Time”. Under ‘Installation Guides
and User Manuals’ see “DHCP Technical Instructions for 708 / 716/ 7018 / 7506 Series”.