IEI Technology WAFER-ULT3, User Manual

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WAFER-ULT3/ULT4 3.5" SBC
Page 58
4.6.6 Serial Port Mode Selection Switch
CN Label: SW2
CN Type: Switch
CN Location: See Figure 4-13
CN Settings: See Table 4-5 and Table 4-6
Use the serial port mode selection switch to select the signal mode for the correspondent
serial port.
SW2: 1 SW2: 2 Description (Signal Mode)
ON ON RS-422
ON OFF RS-232 (Default)
OFF ON RS-485
Table 4-5: Signal Mode Settings for Serial Port 1
SW2: 3 SW2: 4 Description (Signal Mode)
ON ON RS-422
ON OFF RS-232 (Default)
OFF ON RS-485
Table 4-6: Signal Mode Settings for Serial Port 2
The location of the serial port mode selection switch is shown in Figure 4-13 below.
Figure 4-13: Serial Port Mode Selection Switch Location