EMB-3581-COM

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COM1:

COM1是一分二的COM,是CPU直接引出,分别对应设备:/dev/ttyS4、/dev/ttyS7
COM1 引脚定义
信号名称 Pin# Pin# 信号名称
NC 1 2 COM7_RX
COM4_RX 3 4 COM7_TX
COM4_TX 5 6 NC
NC 7 8 NC
GND 9 10 GND

JCOM(1-4):

JCOM(1-4)是一分四COM,分别对应/dev/ttyVIZ0~3
其中1COM/2COM 支持 RS232/RS485 两种传输模式
(J1、J2)跳线控制1COM 的 232/485切换
(J3、J4)跳线控制2COM 的 232/485切换
JCOM(1-4)引脚定义
信号名称 Pin# Pin# 信号名称
JCOM1_D-(485 B) 1 2 NC
JCOM1_RX(485 A) 3 4 JCOM1_RTS
JCOM1_TX 5 6 JCOM1_CTS
NC 7 8 NC
GND 9 10 GND
JCOM2_D- (485 B) 11 12 NC
JCOM2_RX (485 A) 13 14 JCOM2_RTS
JCOM2_TX 15 16 JCOM2_CTS
NC 17 18 NC
GND 19 20 GND
NC 21 22 NC
JCOM3_RX 23 24 JCOM3_RTS
JCOM3_TX 25 26 JCOM3_CTS
NC 27 28 NC
GND 29 30 GND
NC 31 32 NC
JCOM4_RX 33 34 JCOM4_RTS
JCOM4_TX 35 36 JCOM4_CTS
NC 37 38 NC
GND 39 40 GND


JCOM(1-4) 1COM 跳线232/485设置
J1、J2:
JCOM(1-4) 1COM AS RS232 PORT COM2 1COM AS RS485 PORT
J1 1-2 J1 3-4,5-6
J2 1-3,2-4 J2 3-5,4-6
JCOM(1-4) 2COM 跳线232/485设置
J3、J4:
JCOM(1-4) 2COM AS RS232 PORT COM2 2COM AS RS485 PORT
J3 1-2 J1 3-4,5-6
J4 1-3,2-4 J2 3-5,4-6