User manual

63 Chapter 4
The default setup value is “Disabled”
4.6.19 COM 3 Mode Select
This field allows you to set the functional mode of COM 3, the setup
options are RS-232, RS-422, or RS-485. The default setup value is RS-
232.
Figure 4.10: COM3 Mode Select
4.6.20 COM 4 Mode Select
This field allows you to set the functional mode of COM 4, the setup
options are RS-232, RS-422, or RS-485. The default setup value is RS-
232.
4.6.21 Onboard Serial Port 3/4
The field allow you to set the I/O addresses for COM3 (Onboard Serial
Port 3), COM4 (Onboard Serial Port 4),. The setup options are “Dis-
abled”, “4F8”, “4E8”, “3E8”, “2E8”, “3E0”, “2E0”. Leave this field on
the default setting.