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COM3(RS232) Connector Pin Assignment:
PIN
ASSIGNMENT
1
COM3_DCD
2
COM3_RX
3
COM3_TX
4
COM3_DTR
5
GND
COM4(RS232) Connector Pin Assignment:
PIN
ASSIGNMENT
1
COM4_DCD
2
COM4_RX
3
COM4_TX
4
COM4_DTR
5
GND
Note:
COM3, COM4: Pin 9 is selectable for RI, +5V or +12V by jumper setting. Default setting is RI,
please see "COM3 and COM4 PIN9 Definition Selection Guide" for selection details.
SG-G151 USER MANUAL
PIN
ASSIGNMENT
6
COM3_DSR
7
COM3_RTS
8
COM3_CTS
9
COM3_RI_SEL
10
NC
PIN
ASSIGNMENT
6
COM4_DSR
7
COM4_RTS
8
COM4_CTS
9
COM4_RI_SEL
10
NC
Chapter 3 System Configuration
COM3/
COM4
Page: 3-10
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