Atop-technology SW550X User manual Manuale Utente Pagina 16

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Atop Industrial Wireless Serial Device Server Series
SW550X
User Manual V 1.1
10
2.3 Serial Pin Assignments
2.3.1 DB9
Pin#
RS-232
Full Duplex
RS-422/4-Wire RS-485
Half Duplex
2-Wire RS-485
Half Duplex
1
DCD
N/A
N/A
2
RXD
TXD+
N/A (reserved)
3
TXD
RXD+
DATA+
4
DTR
N/A
N/A
5
SG (Signal Ground)
SG (Signal Ground)
SG (Signal Ground)
6
DSR
N/A
N/A
7
RTS
RXD-
DATA-
8
CTS
TXD-
N/A (reserved)
9
RI
N/A
N/A
2.3.2 Terminal Block
Pin#
RS-232
Full Duplex
RS-422/4-Wire RS-485
Half Duplex
2-Wire RS-485
Half Duplex
1
RxD
T+
NC
2
CTS
T-
NC
3
TxD
R+
DATA+
4
RTS
R-
DATA-
5
SG (Signal Ground)
SG (Signal Ground)
SG (Signal Ground)
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