串并口引脚定义图
-
串口引脚排列图
RS-232
—
DB9
孔式
Pin No.
Signal
1
DCD
2
TxD
3
RxD
4
DSR
5
GND
6
DTR
7
CTS
8
RTS
9
---
RS-232
—
DB9
针式
Pin No.
Signal
1
DCD
2
RxD
3
TxD
4
DTR
5
GND
6
DSR
7
RTS
8
CTS
9
---
RS-232
—
DB25
孔式
Pin No.
Signal
2
RxD
3
TxD
4
CTS
5
RTS
6
DTR
7
GND
8
DCD
20
DSR
RS-232
—
DB25
针式
Pin No.
Signal
2
TxD
3
RxD
4
RTS
5
CTS
6
DSR
7
GND
8
DCD
20
DTR
RS-232
—
RJ45(8
pin)
Pin No.
Signal
1
DSR
2
RTS
3
GND
4
TxD
5
RxD
6
DCD
7
CTS
8
DTR
RS-232
—
RJ45(10-pin)
Pin No.
Signal
1
DCD
2
DSR
3
RTS
4
GND
5
TxD
6
RxD
7
GND
8
CTS
9
DTR
10
----
RS-422
—
DB25
孔式
—
for
Opt8F/Z
Pin No.
2
3
7
14
16
Signal
RxD+(B)
TxD+(B)
GND
RxD-(A)
TxD-(A)
RS-422/485
—
DB25
孔式
—
for Opt8K
Pin No.
RS-422
signal
RS-485 signal
2
RxD+(B)
Data+
3
TxD+(B)
7
GND
14
RxD-(A)
Data-
16
TxD-(A)
PC
并行接口引脚定义
PC
并行接口外观是
25
针母插座：
引脚定义
Pin
Name
Dir
Description
1
/STROBE
2
D0
3
D1
4
D2
5
D3
6
D4
Strobe
Data Bit 0
Data Bit 1
Data Bit 2
Data Bit 3
Data Bit 4
7
D5
8
D6
9
D7
10
/ACK
11
BUSY
12
PE
13
SEL
14
/AUTOFD
15
/ERROR
16
/INIT
17
/SELIN
18
GND
19
GND
20
GND
21
GND
22
GND
23
GND
24
GND
25
GND
Data Bit
5
Data Bit
6
Data Bit
7
Acknowledge
Busy
Paper End
Select
Autofeed
Error
Initialize
Select In
Signal Ground
Signal Ground
Signal Ground
Signal Ground
Signal Ground
Signal Ground
Signal Ground
Signal Ground
ECP
并行口定义
ECP
是
Extended
Capabilities
Port
的缩写，
外观同并行口，
是
25
针母插座：
引脚定义
Pin
Name
Dir
Strobe
Address, Data or RLE Data Bit
0
Description
1
nStrobe
2
data0
3
data1
4
data2
5
data3
6
data4
7
data5
8
data6
9
data7
10
/nAck
11
Busy
12
PError
13
Select
14
/nAutoFd
15
/nFault
16
/nInit
17
/nSelectIn
18
GND
19
GND
20
GND
21
GND
22
GND
23
GND
24
GND
25
GND
Address, Data or RLE Data
Bit 1
Address,
Data or RLE Data Bit 2
Address, Data or RLE Data Bit
3
Address, Data
or RLE Data Bit 4
Address, Data or RLE Data Bit
5
Address, Data
or RLE Data Bit 6
Address, Data or RLE Data Bit
7
Acknowledge
Busy
Paper End
Select
Autofeed
Error
Initialize
Select In
Signal Ground
Signal Ground
Signal Ground
Signal Ground
Signal Ground
Signal Ground
Signal Ground
Signal Ground