Lonmark Profile Software; Neuron; Transceiver; Specifications - McQuay MicroTech II Installation And Maintenance Manual

LonMark Profile Software

The MicroTech II LonWorks Communications Module software translates the Standard Network
Variable Types (SNVTs) and Standard Network Configuration Parameter Types (SCPTs) in
accordance with the LonMark profiles used on the LonWorks network into the variables and
parameters used in the MicroTech II Chiller Unit Controller and conversely.

Neuron

The basis of the communications module is an Echelon® Neuron® integrated circuit. Each Neuron
chip contains a globally (i.e., worldwide) unique, 48-bit serial-number called the Neuron ID. The
Neuron ID can be used to address the device on the LonWorks network.

Transceiver

The Echelon Corporation Free Topology Transceiver (FTT-10A) is used to communicate on the
LonWorks network. The network topology may consist of a: star, daisy-chain, or other topology. Data
transmission rate on the network is 78 kbps (baud).

Specifications

Characteristic
Network Topology
Neuron Chip Processor
Free Topology Transceiver (FTT-10A)
Cable Types
Maximum Bus Length
Maximum Node Separation
Data Transmission
Data Transmission Rate
IM 735-0
Description
Flexible Free Topology
3150
50051
TIA Category 5 (recommended)
1476 ft (450) meters per segment
820 ft (250 meters)
Two-wire, half duplex
78 kbps (baud)
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