Rs-232 Interface (Com1,Com2); Rs-232/422/485 Interface (Com3~Com10) - Advantech ECU-4784 Series User Manual

2.5

RS-232/422/485 Interface (COM3~COM10)

The ECU-4784 Series offers 8 ports RS-232/422/485 serial communication interface
ports: COM3 to COM10. Please refer to Appendix A.2 for their pin assignments.
Users can select each port for RS-232 or RS-422/485 through different connections.
Table 2.9: Jumper setting of RS-232/RS-422/RS-485 Selection (For
COM(3~10))
CNx
CN16
CN17
CN18
CN19
(Default)
CN20
CN21
CN22
CN23
Table 2.10: Mapping table of Jumper for COM(3~10) port
COM port
COM3
COM4
COM5
COM6
COM7
COM8
COM9
COM10
Table 2.11: Switch setting of RS-422 Master/Slave Selection
OFF (default)
SW2
ON
ECU-4784 User Manual
4 6 8 10 12 14 16 18 20
2
3 5 7 9 11 13 15 17 19
1
2 4 6 8 10 12 14 16 18 20
3 5 7 9 11 13 15 17 19
1
Jumper for
CN16
CN17
CN18
CN19
CN20
CN21
CN22
CN23
16
Description
RS-422/485
RS-232
RS-232/RS-422/RS-485 Selection
Description
RS-422 Slave Mode
RS-422 Master Mode