V2401/2402 HW User's Manual
Hardware Connection Description
3-6
Connecting Data Transmission Cables
This section describes how to connect the V2401/2402 embedded computers to the network and serial devices.
Connecting to the Network
Plug your network cable into the embedded computer’s Ethernet port. The other end of the cable should be
plugged into your Ethernet network. When the cable is properly connected, the LEDs on the embedded
computer’s Ethernet port will glow to indicate a valid connection.
The 10/100/1000 Mbps Ethernet LAN port uses 8-pin RJ45 connectors. The following diagram shows the
pinouts for these ports.
The LED indicators on the right top and right bottom corners glow a
solid green color when the cable is properly connected to a 100 Mbps
Ethernet network. The LED will flash on and off when Ethernet
packets are being transmitted or received.
The LED indicators on the left top and left bottom corners glow a solid
yellow color when the cable is properly connected to a 1000 Mbps
Ethernet network. The LED will flash on and off when Ethernet
packets are being transmitted or received.
Pin
10/100 Mbps
1000 Mbps
1
ETx+
TRD(0)+
2
ETx-
TRD(0)-
3
ERx+
TRD(1)+
4
---
TRD(2)+
5
---
TRD(2)-
6
ERx-
TRD(1)-
7
---
TRD(3)+
8
---
TRD(3)-
Connecting to a Serial Device
Use a serial cable to plug your serial device into the embedded computer’s serial port. Serial ports P1 to P4 have
male DB9 connectors and can be configured for RS-232, RS-422, or RS-485 communication by software. The
pin assignments are shown in the following table:
DB9 Male Port
RS-232/422/485 Pinouts
Pin
RS-232
RS-422
RS-485
(4-wire)
RS-485
(2-wire)
1
DCD
TxDA(-)
TxDA(-)
---
2
RxD
TxDB(+)
TxDB(+)
---
3
TxD
RxDB(+)
RxDB(+)
DataB(+)
4
DTR
RxDA(-)
RxDA(-)
DataA(-)
5
GND
GND
GND
GND
6
DSR
---
---
---
7
RTS
---
---
---
8
CTS
---
---
---
The V2401 also includes an RS-232 connector on the front panel. It can connect eight devices with a 68-pin
VHDC cable. This cable must be purchased separately. Simply connect one end of the connector to the V2401,
and connect the other end to eight serial devices.
