Vecow EAC-2000, User Manual, Page: 24 / 63

17 ©Vecow EAC-2000 User Manual GETTING TO KNOW YOUR EAC-2000/2100
2.2.2.1 COM Port
There are two Serial ports (COM1, COM2) can be configured for RS-232 or
RS-485 mode. In RS-485 mode it needs to change the Jumper setting to on/off
terminal resistor. Please refer to CH 2.5.4.
Software Setting Function
COM 1
COM 2
RS-232
RS-485
The pin assignments are listed in the following table :
COM Port Pin No. RS-232 RS-485 (3-wire)
1, 2
1 ----------- DATA-
2 RXD DATA+
3 TXD -----------
4 ----------- -----------
5 GND GND
6 ----------- -----------
7 RTS -----------
8 CTS -----------
9 ----------- -----------
9 ----------- -----------