Omron Q2A Series - Switch on Termination Resistor for Modbus Communications

3.6 Control I/O Connections
96 SIEPYEUOQ2A01A AC Drive Q2A Technical Manual
Terminal
Types of Output
Signals
Jumper Switch S5 Parameter Signal Level
AO1
Voltage output
(Default)
H4-07 [AO1 Signal Level Select] = 0: 0 V to 10 V
H4-07 [AO1 Signal Level Select] = 1: -10 V to +10 V
Current output H4-07 [AO1 Signal Level Select] = 2: 4 mA to 20 mA
AO2
Voltage output
(Default)
H4-08 [AO2 Signal Level Select] = 0: 0 V to 10 V
H4-08 [AO2 Signal Level Select] = 1: -10 V to +10 V
Current output H4-08 [AO2 Signal Level Select] = 2: 4 mA to 20 mA
◆ Switch ON Termination Resistor for Modbus Communications
When the drive is the last slave in a Modbus communications, set DIP switch S2 to the ON position. This drive
has a built-in termination resistor for the RS-485 interface.
Figure 3.48 Location of DIP Switch S2
Table 3.16 Modbus Communications Termination Resistor Setting
DIP Switch S2 Description
ON The built-in termination resistor is ON.
OFF (Default) The built-in termination resistor is OFF.