Industrial PC
Instruction Manual
Document No.: PA10009320
12 / 33
Sep. 2021, Revision 00
COM Connector (Titanium)
RS-232
RS-422
RS-485
PIN Func-
tion
Description
Function Description
Function Description
1
DCD
Data Carrier
Detect
TX-
Transmitter
Differential
Pair -
DATA-
Data Differ-
ential Pair A
2
RX
Receive Data TX+
Transmitter
Differential
Pair +
DATA+
Data Differ-
ential Pair B
3
TX
Transmit
Data
RX+
Receiver Dif-
ferential Pair
+
n.c.
not con-
nected
4
DTR
Data Trans-
mit Ready
RX-
Receiver Dif-
ferential Pair
-
n.c.
not con-
nected
5
GND
Ground
GND
Ground
GND
Ground
6
DSR
Data Set
Ready
n.c.
not con-
nected
n.c.
not con-
nected
7
RTS
Ready To
Send
n.c.
not con-
nected
n.c.
not con-
nected
8
CTS
Clear To
Send
n.c.
not con-
nected
n.c.
not con-
nected
9
RI
Ring Indica-
tor
n.c.
not con-
nected
n.c.
not con-
nected
Table 11: Pinout COM Connector Titanium
