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Series 340 BN/MB Transmitter
RS-485 Network Test
Figure 30: RS-485 Test
The Configuration Software has an RS-485 test program.
Although it uses Modbus settings, it is RS-485 communication it is testing.
The test requires connection to a COM port using the Badger Meter A302-20 RS 485 to RS-232 convertor cable. This cable can
also be helpful with other diagnostics programs and devices that use an RS-232 port to communicate.
When testing the RS-485 network, it is sometimes helpful to connect to some other location instead of directly to the Model
340BN/MB. When testing in this way the RS-485 end connector can be removed, and the wires can be connected directly to
the RS-485 pairs.
The following table may be helpful to make connections.
302 Cable -RS-485 End
340BN/MB
340N2
Series 3000
Red
RS-485 +
N2+
RS-485B
White
RS-485 -
N2-
RS-485A
Black
REF
REF
RS-485 Gnd
When the “RS-485 Test” is clicked the following screen appears:
Figure 31: Test Screens