118 YASKAWA ELECTRIC SIEP C710636 02B YASKAWA U1000 Technical Manual
3.12 MEMOBUS/Modbus Termination
3.12 MEMOBUS/Modbus Termination
This drive is equipped with a built in termination resistor for the RS-422/RS-485 communication port. DIP switch S2
enables or disabled the termination resistor as shown in Figure 3.63. The OFF position is the default. The termination
resistor should be placed to the ON position when the drive is the last in a series of slave drives.
Table 3.26 MEMOBUS/Modbus Switch Settings
Figure 3. 63
Figure 3.63 DIP Switch S2 (CIMR-UA/UD/UT)
Figure 3. 64
Figure 3.64 DIP Switch S2 (CIMR-UB)
Note: Refer to the MEMOBUS/Modbus Communications on page 557 for details on MEMOBUS/Modbus.
S2 Position Description
ON Internal termination resistor ON
OFF Internal termination resistor OFF (default setting)
DIP Switch S2
(OFF: default)
OFF
ON
O
N
M1 M2 M5
M3 M6 M4
E(G)
HC H1 H2 DM+ DM- IG R+ R- S+ S-
V+ AC V- A1 A2 A3 FM AM AC MP RP AC
DIP Switch S2
RS-422/485 Termination
Resistor
Off On
SIEP_C710636_02B_1_0.book 118 ページ ２０１５年１１月２５日 水曜日 午後４時５６分
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