BIRD THRULINE 4021, Instruction Book

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Bird 4421 RF Power Meter
14
Setup
Dip Switch
After installing the interface module, set the interface to ADDR
(Addressable) by turning DIP switch 1 ON. This makes the 4421
respond to controller commands.
NOTE: A DIP switch is on when pressed in at the top, and off
when pressed at the bottom.
Set the primary address using the DIP switches. The primary address
is factory set to 6, but can be set to any value between 1 and 31 (0 is
reserved for the controller) To set the primary address, turn OFF
switches 4 – 8 so that the sum of the bits turned off equals the desired
primary address. In Figure 11 below, the address is set to 6 (the off
switches have values of 4 and 2).
NOTE: The primary address is used by the controller to refer to
specific devices on the bus. When programming the controller, the
address in the program must be the same as the address set on
the interface module. Each device on the bus must have a
different primary address.
Talker-Only Mode
The Bird 4421 can be set up for manual operation while automatically
sending data to an output device (Talker-Only Mode). To do so, turn
DIP switch 1 OFF and cycle the power. TALK will be displayed.
In Talker-Only mode, pressing a button on the meter triggers a
measurement. When the measurement is complete, the information is
sent to the bus and LISTEN turns on momentarily. A listen-only
device on the bus, such as a printer, can read the value. The power
meter is then ready to accept another button press.
Figure 11
IEEE Interface Default
DIP Switch Settings