Echelon LonWorks Router - Manual (Page 45)

wide variety of media interfaces (network transceivers) and operates over a wide
range of data rates.
The communications port for the Router 5000 is configured to operate in single-
ended mode. Table lists the pin assignments for the communications port pins.
Table 10. Communications Port Pin Assignments
Pin Drive Current
Single-Ended
Mode (3.3 V) Connect To
CP0 N/A Data input Transceiver RXD
CP1 8 mA Data output Transceiver TXD
CP2 8 mA Transmit Enable
output
Transmit Enable
(single ended mode)
CP3 N/A Do Not Connect
CP4 8 mA Collision Detect
input
Collision Detect
(single ended mode)
Before programming, a Router 5000 uses its default communications parameters,
which define a simplified single-ended mode 78 kbps channel. The default
communications parameters allow you to load an application image over a 78
kbps network, for example during device manufacturing. Devices that use a 78
kbps transceiver (such as a 78 kbps EIA-485 transceiver or an LPT-11 Link
Power Transceiver) can use the default communications parameters within
development or manufacturing test networks. For production networks
(networks with many devices), you should ensure that each device has
communications parameters defined for the channel; see Appendix A,
Communications Parameters for LONWORKS Routers.
Note that devices defined for a TP/XF-1250 channel cannot use the default
communications parameters; each device’s external serial non-volatile memory
must be loaded with the correct communications parameters before connecting to
the network.
See the Series 5000 Chip Data Book for more information about the
communications port for the Neuron 5000 Processor, which is functionally
equivalent to the Router 5000 communications port.
NETP and NETN – FT Router 5000 Only
The FT Router 5000 has a simple communications port for connecting to TP/FT-
10 network channels. It consists of two pins, NETP and NETN, which you
connect to the corresponding pins of the FT-X3 Communications Transformer.
See the Series 5000 Chip Data Book for more information about connecting these
pins to the transformer and connecting the transformer to the FT network.
Like the Router 5000, an FT Router 5000’s default communications parameters
define a simplified single-ended mode 78 kbps channel – a TP/FT-10 channel.
L ON W ORKS Router User’s Guide 35