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UNO-2178A
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Appendix A
A.3 RS-232/485 St
andard Se
rial Port (COM1~COM2)
T
able A.3: RS-232 S
tandard Serial Port
Pin Assignments
Pin
RS-232 Signal Name
RS-485 Signal Name
1
DCD
DA
T
A-
2R
x
D
D
A
T
A
+
3T
x
D
N
C
4D
T
R
N
C
5G
N
D
G
N
D
6D
S
R
N
C
7R
T
S
N
C
8C
T
S
N
C
9R
I
N
C
1
...
...
37
38
39
40
41
...
...
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