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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
. 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:
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