Network Termination - YASKAWA CIMR-VU BA0001 Technical Manual

C.4 Connecting to a Network
u

Network Termination

The two ends of the MEMOBUS/Modbus network line have to be terminated. The drive has a built in terminating resistance
that can be enabled or disabled using DIP switch S2. If a drive is located at the end of a network line, enable the terminating
resistance by setting DIP switch S2 to the ON position. Disable the terminating resistance on all slaves that are not located at
the network line end. Figure C.5
438
illustrates the setting of DIP switch S2.
DIP switch S2
(in the ON position)
OFF ON
R+ R－ S+ S－ IG
P1 P2 PC A1 A2 +V AC AM AC MP
MA MB MC
S1 S2 S3 S4 S5 S6 S7 HC SC H1 RP
R+ R- S+ S- IG
Figure C.5 Serial Communications Terminal and DIP Switch S2
S+
S-
RS-422A
or
R+
RS-485
R-
terminal resistance (1/2 W, 120 )
YASKAWA ELECTRIC SIEP C710606 18F YASKAWA AC Drive – V1000 Technical Manual
+
-
DIP
switch
S2