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Howen Technologies CO., Ltd
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3 Cable Interface
3.1 5557 2x5 pin, 2x4pin, 2x3 pin MALE connectors
3.2 5557 2x5 pin FEMALE connector
Pin No
Definition
Description
1
UART1_RXD0
RS232 receiving, COM2
2
UART1_TXD0
RS232 transmission, COM2
3
UART1_RXD2
RS232 receiving, COM4
4
UART1_TXD2
RS232 transmission, COM4
5
NC
6
OUTPUT0
+12V output control
7
NC
8
NC
9
NC
10
GND
Ground
3.2.1 UART
Pin No
Definition
Description
2x5 FEMALE No.
1
TXD0
RS232 transmission, COM2
2
2
GND
Ground
10
3
RXD0
RS232 receiving, COM2
1
