C.3 Connecting to a Network
■ RS-422 Interface
F ig u r e C .4 R S -4 2 2 I n te r f a c e
Note: 1. Turn on the D IP switch on the drive that is located at the end o f the network. A ll other slave devices m ust have this D IP switch set to
the OFF position.
2. Set H5-07 to 0 when using the RS-485 interface.
Set H 5-07 to 1 when using the RS-422 interface in multi-drop circuit. Set H5-07 to 0 w hen using the RS-422 interface in point-to-
point circuit.
♦ Network Termination
The two ends o f the MEMOBUS/Modbus network line have to be terminated. The drive has a built in termination
resistor that can be enabled or disabled using DIP switch S2. If a drive is located at the end o f a network line, enable the
termination resistor by setting DIP switch S2 to the ON position. Disable the termination resistor on all slaves that are not
located at the network line end.
Refer to
MEMOBUS/Modbus Termination on page 69
for details on setting S2.
YASKAWA ELECTRIC SIEP C710616 33D YASKAWA AC Drive L1000A Technical Manual
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