User manual

11 PCM-4153 User Manual
Chapter 2 Installation
2.11 COM Port Connector (CN20,CN30)
The board provides four serial ports: Four serial RS-232 ports in one Hirose 40 pin
connector(CN30: COM1/2/3/4). It provides connections for serial devices or a com-
munication network. You can find the pin assignments for the COM port connector in
Appendix C.
2.11.1 Serial Port RS-422/485 (CN20)
Serial port can be configured to operate in RS-422 and RS-485 mode. RS-422 and
RS-485 in one pinheader (CN20) and can be configured via CN39 connector..
2.12 VGA/LCD Interface Connections
The board’s PCI SVGA interface can drive conventional CRT displays and is capable
of driving a wide range of flat panel displays.
2.12.1 CRT Display Connector (CN27)
The CRT display connector is a 15-pin D-SUB connector used for conventional CRT
displays.
2.12.2 TTL TFT LCD Connector (CN4)
For PCM-4153 series, CN4 consists of a 40-pin connector which can support up to
24-bit LCD panel. It is Hirose’s product no. DF13A-40DP-1.25 V
2.13 Ethernet Configuration
The board is equipped with two high performance 32-bit PCI-bus Ethernet interface
which are fully compliant with IEEE 802.3U 10/100Mbps standards. They are sup-
ported by all major network operating systems.
2.13.1 100Base-T Connector (CN25, CN26)
100Base-T connections are made via two internal 10-pin box header.
2.14 Watchdog Timer Configuration
An onboard watchdog timer reduces the chance of disruptions which EMP (electro-
magnetic pulse) interference can cause. This is an invaluable protective device for
standalone or unmanned applications. Setup involves one jumper and running the
control software (refer to Appendix A).
Table 2.3: Serial Port RS-422/485 (CN39)
Setting Function
1-2 RS-232 (default)
3-4 RS-485
5-6 RS-422