Switch On Termination Resistor For Modbus Communications - Omron Q2A Series Technical Manual

3.6 Control I/O Connections
Types of Output
Terminal
Signals
Voltage output
(Default)
AO1
Current output
Voltage output
(Default)
AO2
Current output
◆

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.
DIP Switch S2
96
Jumper Switch S5
H4-07 [AO1 Signal Level Select] = 0: 0 V to 10 V
H4-07 [AO1 Signal Level Select] = 1: -10 V to +10 V
H4-07 [AO1 Signal Level Select] = 2: 4 mA to 20 mA
H4-08 [AO2 Signal Level Select] = 0: 0 V to 10 V
H4-08 [AO2 Signal Level Select] = 1: -10 V to +10 V
H4-08 [AO2 Signal Level Select] = 2: 4 mA to 20 mA
Figure 3.48 Location of DIP Switch S2
Table 3.16 Modbus Communications Termination Resistor Setting
ON
OFF (Default)
Parameter Signal Level
Description
The built-in termination resistor is ON.
The built-in termination resistor is OFF.
SIEPYEUOQ2A01A AC Drive Q2A Technical Manual