Industrial PC
Instruction Manual
Document No.: PA10009320
13 / 33
Sep. 2021, Revision 00
COM Connector (Celeron N3350 Argon)
RS-232
RS-422
RS-485
PIN Func-
tion
Description
Function Description
Function Description
1
DSR
Data Set
Ready
n.c.
not con-
nected
n.c.
not con-
nected
2
GND
Ground
GND
Ground
GND
Ground
3
GND
Ground
GND
Ground
GND
Ground
4
TXD
Transmit
Data
RX+
Receiver Dif-
ferential Pair
+
n.c.
not con-
nected
5
RXD
Receive Data TX+
Transmitter
Differential
Pair +
DATA+
Data Differ-
ential Pair B
6
DCD
Data Carrier
Detect
TX-
Transmitter
Differential
Pair -
DATA-
Data Differ-
ential Pair A
7
DTR
Data Termi-
nal Ready
RX-
Receiver Dif-
ferential Pair
-
n.c.
not con-
nected
8
CTS
Clear To
Send
n.c.
not con-
nected
n.c.
not con-
nected
9
RTS
Request To
Send
n.c.
not con-
nected
n.c.
not con-
nected
10 RI
Ring Indica-
tor
n.c.
not con-
nected
n.c.
not con-
nected
Table 12: Pinout COM Connector Celeron N3350 Argon
