16
GN
D
GN
D
GN
D
GN
D
GN
D
GN
D
GN
D
GN
D
GN
D
GN
D
GN
D
GN
D
GN
D
DR
VDE
N
0
N/C
DR
VDE
N
1
IND
E
X
#
MT
R0
#
DS
1#
DS
0#
MT
R1
#
DIR
#
ST
EP
#
W
D
AT
A#
’
WG
A
T
E
#
TR
AK
00
#
WR
T
P
R
T
#
RD
AT
A#
GN
D
GN
D
GN
D
GN
D
HD
SE
L#
DS
KC
HG#
34
33
1
2
u
3.11 Serial Port Connectors
The HS-2608 v2.0 offers two NS16C550 compatible UARTs with
Read/Receive 16-byte FIFO serial ports and four internal 10-pin
headers and one RS-422/485 connector.
CN16: COM1 Connector (5x2 Header)
PIN Description PIN Description
1
DCD1
2
DSR1
3
RXD1
4
RTS1
5
TXD1
6
CTS1
7
DTR1
8
RI1
9
GND
10
N/C
2
4
6
8
10
1
3
5
7
9
DSR1
RTS1
CTS1
N/C
RI1
DCD1
RXD1
TXD1
GND
DTR1
CN18: COM2 Connector (5x2 Header)
PIN Description PIN Description
1
DCD2
2
DSR2
3
RXD2
4
RTS2
5
TXD2
6
CTS2
7
DTR2
8
RI2
9
GND
10
N/C
2
4
6
8
10
1
3
5
7
9
DSR2
RTS2
CTS2
N/C
RI2
DCD2
RXD2
TXD2
GND
DTR2