Campbell Scientific RF401-series and RF430-series Spread Spectrum Data Radios/Modems - Manual (Page 75)

Appendix F. Non-PakBus Example
Configurations
The following procedures explain how to build a basic RF401 point-to-point
network and a point-to-multipoint network with base station connected directly
to the PC COM port. The PC should be running LoggerNet or PC208W. The
remote station can consist of a radio connected to a datalogger.
F.1 Direct PC to RF401 Series Base Station Setup
(Transparent Protocol)
1. Connect the radio’s RS-232 port to a PC COM port using a straight
through serial cable Item # 10873, or equivalent. Use a 25-pin to 9-pin
adapter if necessary. This hardware configuration can serve (1) to do the
set-up of the radio, and (2) for base station communications with
datalogger(s) in point-to-point or point-to-multipoint networks.
2. Access DevConfig (see Section 5.1, DevConfig).
a. Leave Active Interface in “Auto Sense” (default setting) for most
applications. In Auto Sense the RF401 will test for 5 V on CS I/O
port (pin 1) to determine if a datalogger is present and if so select the
CS I/O port.
b. Use Transparent Protocol.
c. Select a Net Address from (0 – 63). Unless there is a neighboring
network, leave network address “0.” The Network Address must be
the same throughout the network of RF401s.
d. Select a Radio Address (0 – 1023). The radio addresses must be the
same in point-to-point communications (for point-to-multipoint
communications you could set the base RF401 to 0 and the remotes to
1, 2, 3, etc.).
It is a good idea to label each RF401 indicating the configured
network address, radio address, hopping sequence, etc.
e. Select a Hopping Sequence (0 – 6). The hopping sequence must be
the same for all RF401s in the network.
If there happens to be a neighboring RF401 network using the same
hopping sequence, you should change to a different one in case their
network and radio addresses happen to match yours and to reduce
retries.
F-1