Serial Port Connector Pinouts; Cabling; Rs-485 Mode Line Driver Control; Table 10: J13 Com1/Com2 Connector Pinout - VersaLogic BayCat VL-EPM-31ECP Hardware Reference Manual

S P C
ERIAL ORT
C
ABLING
An adapter cable, part number CBR-1014, is available for routing the J13 signals to 9-pin D-sub
connectors. This is a 12-inch, Pico-Clasp 10-pin to two 9-pin D-sub connector cable.
If your application requires a custom cable, the following information will be useful:
RS-485 M
ODE
The transmit line driver can be automatically turned on and off based on data availability in the
UART output FIFO. This mode can be enabled in the BIOS setup utility. The transmit line driver
can be enabled in the BIOS Setup utility.
EPM-31 Hardware Reference Manual
P
ONNECTOR INOUTS

Table 10: J13 COM1/COM2 Connector Pinout

Pin RS-232 Signal
1 RTS1
2 TXD1#
3 CTS1
4 RXD1#
5 GND
6 RTS2
7 TXD2#
8 CTS2
9 RXD2#
10 GND
EPM-31 Board Connector
Molex 501331-1007
L D C
INE RIVER ONTROL
RS-422/RS-485 Signal
TXD1_P
TXD1_N
RXD1_P
RXD1_N
GND
TXD2_P
TXD2_N
RXD2_P
RXD2_N
GND
Mating Connector
Molex 501330-1000
Serial Ports
Port
COM1
—
COM2
—
44