EMB-3940-COM

EMB-3940 COM1-2，COM3-6

COM1-2：

信号名称	Pin	Pin	信号名称
HDCD#1	1	2	HDSR#1
HSIN1	3	4	HRTS#1
HSOUT1	5	6	HCTS#1
HDTR#1	7	8	HRI#1
GND	9	10	GND
HDCD#2TX-DATA-	11	12	HDSR#2
HSIN2TX+DATA+	13	14	HRTS#2
HSOUT2RX+	15	16	HCTS#2
HDTR#2RX	17	18	HRI#2
GND	19	20	GND

• COM2 跳线功能设置（J1，J2，J3）

Pin	COM2 AS RS232 PORT	Pin	COM2 AS RS422 PORT	Pin	COM2 AS RS485 PORT
J1	1-3 2-4	J1	3-5 4-6	J1	3-5 4-6
J2	1-3 2-4	J2	3-5 4-6	J2	3-5 4-6
J3	1-2	J3	3-4	J3	5-6 7-8

COM3-6：

信号名称	Pin	Pin	信号名称
HDCD#3	1	2	HDSR#3
HSIN3	3	4	HRTS#3
HSOUT3	5	6	HCTS#3
HDTR#3	7	8	HRI#3
GND	9	10	GND
HDCD#4	11	12	HDSR#4
HSIN4	13	14	HRTS#4
HSOUT4	15	16	HCTS#4
HDTR#4	17	18	HRI#4
GND	19	20	GND
HDCD#5	21	22	HDSR#5
HSIN5	23	24	HRTS#5
HSOUT5	25	26	HCTS#5
HDTR#5	27	28	HRI#5
GND	29	30	GND
HDCD#6	31	32	HDSR#6
HSIN6	33	34	HRTS#6
HSOUT6	35	36	HCTS#6
HDTR#6	37	38	HRI#6
GND	39	40	GND