3115T Thin Line Industrial Flat Panel PC Chapter 3 – POS-370 Control Board and BIOS Setup
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141876(E)
COM1: Serial Port DB-9 Male Connector (CN6)
Table 3–6. COM1 Pinout (CN6)
Pin No.
Description
1
DATA CARRIER DETECT (DCD)
2
RECEIVE DATA (RXD)
3
TRANSMIT DATA (TXD)
4
DATA TERMINAL READY (DTR)
5
GROUND (GND)
6
DATA SET READY (DSR)
7
REQUEST TO SEND (RTS)
8
CLEAR TO SEND (CTS)
9
RING INDICATOR (RI)
COM2: Serial Port 2x5 pin header Connector (CN10)
* COM2 supports three modes: RS232, RS422, RS485 (For 2x5 pin header Connector).
Table 3–7. COM2 Pinout (CN10)
Pin No. RS232 Mode RS422 Mode RS485 Mode
1
DCD
TXD-
RTX-
2
DSR
RX-
NC
3
RXD
TXD+
RTX+
4
RTS
RX+
NC
5
TXD
NC
NC
6
CTX
NC
NC
7
DTR
NC
NC
8
RI
Voltage
Voltage
9
GND
NC
NC
10
NC
NC
NC