System 50
NETWORK INTERFACES
Microlon® (LonWorks)
FEATURES
• LONWORKS TechnologyIntegrated
with Standard Industrial I/O Racks
andModules
• Extend Isolated Analog (G5 Only)
and Digital Signals over Twisted
Pair Network without Signal Loss
• Mix and Match Analog and Digital
ModulesinanyConfiguration
• LONMARK2.0Compliant–
InteroperablewithotherLONWORKS
Products
• MultipleCommunicationMedia
Types Available
• Peer-to-PeerCommunications
• Uses Network Variables of SNVT
(StandardNetworkVariableType)
toControl/ReadModules
be exorbitant. Finally, making a change to the toRS-232atspeedsupto115,200baud.PCLTAs
APPLICATIONS
Stand Alone Control
Local Control & I/O
Remote I/O
system after installation is costly.
are ISA-bus cards that offer higher performance.
If the network contains other LONWORKS based
To alleviate this problem, install Microlon® units products, the NetProfiler (included with
and I/O modules near the sensors or actuators LonMaker1) is used to define the “parts catalogs”
and network the Microlon® units back to the host
tailored to the network. Otherwise, for networks
computer (if a host is necessary). Peer-to-peer containing only Microlon® controllers, the “parts
™
communications, inherent with LONWORKS
catalog” will be provided, eliminating the need for
technology, make it easy to extend signals the NetProfiler package. Third party network
Distributed I/O
SCADA
digitally, without signal loss.
management, control and monitoring tools and
LonTalk Adapters are available, please contact
Grayhill for more information.
Up to 63 Microlon® controllers (nodes) can be
networked together on a physical segment.
RTU
Units can be added with the aid of repeaters or The Microlon® controller is shipped with a
routers. Each node may contain up to 8 isolated standard application program which contains
modules, configured as input or output, digital or everything necessary to interface with all of
GENERALDESCRIPTION
The Microlon® network interface combines the
analog.
Grayhill'sI/Omodules.Installation,Configuration,
and Troubleshooting are outlined in the 72-LON-
™
power of LONWORKS technology with Grayhill
Microlon® controllers use one of two different I8 manual (order separately). In addition, the
physical media types to communicate over the Microlon® application disk is supplied with the
network. Twisted pair, transformer isolated (TP/ manual and contains example source code and
XF) networks operate at 78 Kbps at distances up the interface files (“parts catalog”). The readme
to 6500 feet (2000 meters). In addition, FTT-10 file contains information not found in this manual.
operating at 78 Kbps at distances up to 1500 feet If you have a LonBuilder or NodeBuilder
(500 meters) is supported. Routers and Bridges Development Tool, you may wish to modify the
may be used to change the communication applicationprogramandtailorittoyourapplication.
media type from node to node. For example, a
standard industrial I/O racks and modules.
Microlon® controllers may be distributed over
great distances yet provide seamless
interoperability. The robust communication
protocol LonTalk® is built into the firmware of the
Neuron® chip, theheartofLONWORKS technology.
The LonTalk® protocol follows the (7 layer) OSI
Reference Model for network protocols. This
technology is becoming the de facto standard for
interoperability. Thisfreestheuserfromworrying
about network communication protocols.
Router may connect a group of nodes operating
overtheFTT-10mediumtoanothergrouputilizing
the TPT-XF/78 medium.
In applications where the inputs and outputs that
need to be monitored and controlled are spread
out over a large area, running long signal lines
from the sensors and actuators to a central
controller can lead to numerous costly problems.
First, there is the time and expense of routing the
signal lines and shielding them from cross-talk,
EMI, and RFI. If this is not done properly, the cost
and time required to troubleshoot the wiring can
Networks are installed and/or modified using the
Echelon LonBuilder Development system,
LonMaker installation tool or a third party tool.
LonMaker is a software package that runs on a
PC and communicates to Microlon controllers
using a Serial LonTalk Adapter (SLTA) or a PC
1 With metal enclosure installed
LonTalk Adapter (PCLTA). SLTAs are available
for all types of network media and converts them
Cascade Group, Inc., 68 West Main St., Oyster Bay, NY 11771
email: support@cascadegroupinc.com, web: www.cascadegroupinc.com ph 516-624-9362, fax 516-624-9363
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