3.10 Control I/O Connections
YASKAWA ELECTRIC SIEP C710616 27G YASKAWA AC Drive A1000 Technical Manual 91
MEMOBUS/Modbus Termination
This drive is equipped with a built in termination resistor for the RS-422/485 communication port. DIP switch S2 enables
or disabled the termination resistor as shown in Table 3.19. The OFF position is the default
. The termination resistor
should be placed to the ON position when the dri
ve is the last in a series of slave drives. Refer to Switches and Jumpers
on the Terminal Board on page 87 for locating switch S2.
Table 3.19 MEMOBUS/Modbus Switch Settings
Note: Refer to MEMOBUS/Modbus Communications on page 545 for details on MEMOBUS/Modbus.
Terminal DM+ and DM- Output Signal Selection
Slide the switch S6 to select N.C. or N.O. as the state of the DM+ and DM- terminals for EDM output. The switch is
initially set to N.C.
Table 3.20 EDM Switch Settings
Note: Refer to Safe Disable Input Function on page 600 for details on EDM.
S2 Position Description
ON Internal termination resistor ON
OFF Internal termination resistor OFF (default setting)
S6 Position Description
N.O. Normal Open
N.C. Normal Close (default setting)
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