GPD315 Modbus RTU Technical Manual TM 4325
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4
Connecting Multiple Drives
Multiple drives may be connected together. A terminating resistor must be enabled at the start
and end of the network. Set SW2 switch 1 to “on” to enable the terminating resistor. SW2 is
found just above the upper row of control terminals and consists of two switches. The switch
towards the top (labeled “1”) controls the terminating resistor. The following diagram illustrates
the connection between multiple drives for RS-485 (half duplex) and RS-422 (full duplex).
Figure 2.3 Interconnection of Drives using RS-485
Figure 2.4 Interconnection of Drives using RS-422
Note:
The shielded wire should be connected to the drive’s ground terminal.
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