User`s manual
Table Of Contents
- About this Manual
- Warranty
- Static Electricity Precautions
- Safety Measures
- About the Package
- Before Using the System Board
- Chapter 1 - Introduction
- Chapter 2 - Hardware Installation
- Chapter 3 - BIOS Setup
- Chapter 4 - Supported Software
- Appendix A - Enabling Hyper-Threading Technology
- Appendix B - Watchdog Timer
- Appendix C - System Error Message
- Appendix D - Troubleshooting
31
2
Hardware Installation
COM 4 RS232/RS485/AUX Select
JP5 is used to set COM 4 to RS-232 or RS-485. If the serial device
connected to this port requires 5V/12V power from the system
board, set JP5 pins 1-3, 2-4, 9-11 and 10-12 to On.
JP5
1-3, 2-4, 7-9, 8-10 On
3-5, 4-6, 7-9, 8-10 On
1-3, 2-4, 9-11 (12V),
10-12 (5V) On
COM 4 RS232/RS485/AUX Select
RS232 (default)
RS485
Auxiliary power
The table below list the pin assignment of JP5.
1
3
5
7
9
11
N. C.
EN232-
GND
MDCD4-
X_MDCD4-
+12V
2
4
6
8
10
12
N. C.
SIN4
RS485
MRI4-
X_MRI4-
Vcc
X
JP5
1
2
12
11