|
Twisted Pair
Transceivers 5498x provide a simple, cost-effective method of
adding a LonWorks transceiver to any Neuron Chip-based control
system. The transceivers consist of transformer-isolated
differential Manchester encoded communication transceivers and
connectors for power, the Neuron Chip communications port (CP)
lines, and the twisted pair network data bus. The small size of
the transceivers permits them to be mounted almost anywhere on a
printed circuit board assembly, either as a socketed or soldered
component. The transceivers are available as either a 78kbps
transceiver (54981) or 1.25Mbps transceiver (54983). The
transceivers can communicate with TP/XF control modules
operating at the same bit rate for those applications using both
types of devices. 78Kbps transceiver (54981) is compatible with
Echelon's TPT/XF-78, and 1.25Mbps transceiver (54983) is
compatible with Echelon's TPT/XF-1250.
Using 5498x
transceivers can save hundreds of hours of development time
compared with designing custom transceivers. The transceivers
are economically priced for OEM application. In addition, the
78kbps and 1.25Mbps transceivers fit in the same mounting holes,
allowing a common motherboard to be used with both devices.
The
transceivers use transformers to isolate them from the twisted
pair network bus. This design provides excellent common mode
rejection and permits the system to operate in electrically
noisy environments. It also reduces the susceptibility of the
system to ground loops caused by the use of multiple node power
supplies that float relative to ground. This architecture makes
the transceivers ideal for communicating over long distances in
industrial environments. The transceivers are self-contained
network transceivers, and require only a +5VDC power source, a
Neuron 3120 Chip or Neuron 3150 Chip and associated memory, an
oscillator, and application electronics to form a complete
node.
The
transceivers are exchangeable with Echelon's congeneric
products. |
