28
LonWorks Router Electrical Interfaces
The communications port for the Router 5000 is configured to operate in single-
ended mode.
Table 7
lists the pin assignments for the communications port
pins.
Table 7
. 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
, on page 81.
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.
IO[11..0]
These digital I/O pins provide the communications between the A side and B side
of a Router 5000 device. Connect the IO pins for one router side to the
corresponding IO pin on the other router side, as shown in
Figure 14
on page 29.
Note that you must provide 10 kΩ p
ull-up resistors for the
IO6
,
IO7
, and
IO10
pins. The
IO11
pin is not used for either router half, but it should be pulled up
with a 10 kΩ pull
-up resistor.
Summary of Contents for 14315R
Page 1: ...LONWORKS Router User s Guide 078 0018 01E...
Page 6: ......
Page 9: ...Appendix A Communications Parameters for LonWorks Routers 81 Communications Parameters 82...
Page 10: ......
Page 48: ......
Page 53: ...LonWorks Router User s Guide 43 Figure 22 Router 5000 Mechanical Specifications...
Page 54: ......
Page 57: ...LonWorks Router User s Guide 47 Figure 23 RTR 10 Motherboard Example Schematic...
Page 61: ...LonWorks Router User s Guide 51 Figure 26 Router 5000 Motherboard Example Schematic Core...
Page 62: ...52 Developing a LonWorks Router Figure 27 Router 5000 Motherboard Example Schematic Network...
Page 68: ......
Page 80: ......
Page 99: ...www echelon com...
