MITX-6948-COM
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COM-3456 引脚定义
| 信号名称 |
Pin |
Pin |
信号名称
|
| DCD#3 |
1 |
2 |
DCR#3
|
| SIN3 |
3 |
4 |
RTS#3
|
| SOUT3 |
5 |
6 |
CTS#3
|
| DTR#3 |
7 |
8 |
RI#3
|
| GND |
9 |
10 |
GND
|
| DCD#4 |
11 |
12 |
DCR#4
|
| SIN4 |
13 |
14 |
RTS#4
|
| SOUT4 |
15 |
16 |
CTS#4
|
| DTR#4 |
17 |
18 |
RI#4
|
| GND |
19 |
20 |
GND
|
| DCD#5 |
21 |
22 |
DCR#5
|
| SIN5 |
23 |
24 |
RTS#5
|
| SOUT5 |
25 |
26 |
CTS#5
|
| DTR#5 |
27 |
28 |
RI#5
|
| GND |
29 |
30 |
GND
|
| DCD#6 |
31 |
32 |
DCR#6
|
| SIN6 |
33 |
34 |
RTS#6
|
| SOUT6 |
35 |
36 |
CTS#6
|
| DTR#6 |
37 |
38 |
RI#6
|
| GND |
39 |
40 |
GND
|
COM2引脚定义
COM2 跳线功能设置(J1、J2、J3)
- (J1, J2,J3)跳线用来设置 COM2 的传输模式, COM2 支持 RS232/RS422/RS485 三种传输模式,您可以根据您自身的需求来选择设置,默认传输模式为 RS232。
- J1、J2、J3:
| COM2 AS RS232 PORT |
COM2 AS RS422 PORT |
COM2 AS RS485 PORT
|
| J1 |
1-3,2-4 |
J1 |
3-5,4-6 |
J1 |
|
| J2 |
1-3,2-4 |
J2 |
3-5,4-6 |
J2 |
3-5,4-6
|
| J3 |
1-2 |
J3 |
3-4 |
J3 |
5-6
|
当 COM2 设置为 RS232 时,主板插针定义
| Pin |
信号名称
|
| 1 |
DCD#
|
| 2 |
SIN
|
| 3 |
SOUT
|
| 4 |
DTR#
|
| 5 |
GND
|
| 6 |
DSR#
|
| 7 |
RTS#
|
| 8 |
CTS#
|
| 9 |
RI
|
当 COM2 设置为 RS422 时,主板插针定义
| Pin |
信号名称
|
| 1 |
TX-
|
| 2 |
TX+
|
| 3 |
RX+
|
| 4 |
RX-
|
| 5 |
GND
|
| 6 |
|
| 7 |
|
| 8 |
|
| 9 |
|
当 COM2 设置为 RS485 时,主板插针定义
| Pin |
信号名称
|
| 1 |
DATA-
|
| 2 |
DATA+
|
| 3 |
|
| 4 |
|
| 5 |
GND
|
| 6 |
|
| 7 |
|
| 8 |
|
| 9 |
|
