Memobus/Modbus Termination - YASKAWA U1000 Series 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
resistor should be placed to the ON position when the drive is the last in a series of slave drives.
S2 Position
ON
OFF
Figure 3.63
Figure 3.64
Note: Refer to the MEMOBUS/Modbus Communications on page 557
118
Table 3.26 MEMOBUS/Modbus Switch Settings
DIP Switch S2
ON
OFF
(OFF: default)
Figure 3.63 DIP Switch S2 (CIMR-UA/UD/UT)
DIP Switch S2
RS-422/485 Termination
Resistor
Off On
Figure 3.64 DIP Switch S2 (CIMR-UB)
Figure 3.63. The OFF position is the default. The termination
Description
Internal termination resistor ON
Internal termination resistor OFF (default setting)
E(G) HC H1 H2 DM+ DM- IG R+ R- S+ S-
V+ AC V- A1 A2 A3 FM AM AC MP RP AC
for details on MEMOBUS/Modbus.
YASKAWA ELECTRIC SIEP C710636 02B YASKAWA U1000 Technical Manual
M3 M6 M4
M1 M2 M5