User Manual

BTR-30N, TR-30N, TR-32N Operation 43
Master and Servant Base Stations
A master base station is one that the user has set its base number
to 01(Master) and has its transmitters on. A master base conveys
base-to-beltpack data to its beltpacks and via a base station link
cable, relays the base-to-beltpack data from
base stations that have their base transmitters off. A master may
support up to seven (7) additional base stations with their
transmitters off.
IMPORTANT: There can be only one (1) master base
station in a network of base stations.
FIGURE 59. Status screen of a master designated base
station
FIGURE 61. How to get to the master/servant
selection screen
A master base automatically sets a 09 (default) base to a unique
02 to 08 servant number. If a base is already a servant the master
leaves it at that same number.
NOTE: Any time base
stations are changed to be a master
base station, it must be power cycled for the
change to take affect.
A servant base station is one that has its transmitters
off and is
connected to a master base. Since servant base stations have
their transmitters off, base-to-beltpack information can only get
to beltpacks via link cables connected to a master base station.
There can be up to seven (7) servants working with one (1)
master.
A servant or master base is set via the Base Main menu screen in
the base station.
From the factory, base station are set to base number 09. This is
an unassigned base. The base
can be left as 09 if not in a linked
system. It works as normal with all features.
If the unassigned base is connected to a master base station, the
master automatically assign a valid, unique, servant ID to it the
first time the networked system is powered-up.
The master base must always power-up after the servant bases
in order to detect servant units to control. If all the units are on a
common power strip, this is controlled by a built in delay on
master base station. The master base station always boots slower
than servant units.
CAN bus
A CAN (Controlled Area Network) bus is the data protocol used
over the BTR-30N’s base station link cable. This balanced
protocol is a robust standard used the world over in high noise,
extreme environments. It requires the use of 120 Ohm
terminators at the beginning and end of a CAN bus network.
TABLE 2. Valid Base Number Settings
Base Number Function
01 Master
02 Servant
03 Servant
04 Servant
05 Servant
06 Servant
07 Servant
08 Servant
09 Unassigned (Default)
FIGURE 60. Status Screen of the Servant Base Station