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HP vc4815 - Thin Client Manual page 2

Serial port definition guide: hp compaq vc4815 thin client
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HP Compaq vc4815 终端默认具有 4 个串口,分别为串口一、串口二,串口三、
串口四。
定义
引脚
1 脚
2 脚
3 脚
4 脚
5 脚
6 脚
7 脚
8 脚
9 脚
HP Compaq vc4815 终端默认出厂设置
定义
引脚
1 脚
2 脚
3 脚
4 脚
5 脚
6 脚
7 脚
8 脚
9 脚
注:辅口 2 的 2、3 脚为 RS232,8、9 脚为 TTL
主串一的 1 脚可以提供+5V 供电,8,9 脚可跳选为 RXD/TXD 的 TTL 模式
主口
(串口 1)
(串口 2)
DCD/ +5V
+5V / DCD
RXD
TXD
DTR/ +12V
DTR/+5V /+12V
GND
DSR
RTS/+12V
RTS/+12V
CTS/RXD
(TTL)
RI/TXD
(TTL)
主口
(串口 1)
(串口 2)
DCD
RXD
TXD
DTR
GND
DSR
RTS
CTS
RI
辅口 2
辅口 1
(串口 3)
(TTL)
+5V / DCD
RXD
RXD/TXD
TXD
TXD/RXD
NC/DTR
GND
DSR
NC/DSR
NC/RTS
CTS
RXD/TXD(TTL)
RI
TXD/RXD(TTL)
辅口 2
辅口 1
(串口 3)
(TTL)
DCD
RXD
TXD
DTR
GND
DSR
RTS
CTS
RI
辅口 3
(串口 4)
+5V / DCD
RXD
TXD
DTR/+5V /+12V
GND
GND
DSR
RTS/+12V
CTS
辅口 3
(串口 4)
DCD
DCD
RXD
RXD
TXD
TXD
NC
DTR
GND
GND
NC
DSR
NC
RTS
RXD
CTS
TXD
RI
RI

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Compaq vc4815