Electrical installation
30
Note: The built-in termination circuitry of the RPBA-01 is of the
active type, so the module has to be powered for the termination
to work. If the module needs to be switched off during operation of
the network, the bus can be terminated by connecting a 220 ohm,
1/4 W resistor between the A and B lines.
Figure 2. Bus termination switch
Node selection
Use the rotary node address selectors on the module to select the
node address number. The node address number is a decimal
number ranging from 01 to 99. The left selector represents the first
digit and the right selector the second digit. The node address can
be changed during operation, but the module must be re-initialised
for changes to take effect.
Note: When 00 is selected, the node number is defined by a
parameter in the fieldbus parameter group of the drive.
Figure 3. Node selectors
ON ON
Bus termination OFF Bus termination ON
0
1
2
3
4
5
6
7
8
9
0
1
2
3
4
5
6
7
8
9
10x 1x
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