User`s manual

Chapter 2

Installing a CYCOM 485

Before you open your computer and install the board, install and run InstaCal™, the installation, calibration and

test utility included with your board. InstaCal will guide you through switch and jumper settings for your board.

Detailed information regarding these settings can be found below.

The C

YCOM 485 is easy to install. You must set the COM port number then open your computer and install the

board. From that point on simply use any PC compatible communication software to communicate with

devices connected to the C

YCOM 485.

Before installing the board in your computer you must:

1. Select a COM port number for your C

YCOM 485.

2. Disable or remove any COM port currently using that port number.

3. To select the COM port number you must set the base address and interrupt jumper to one of the choices

corresponding to COM1, COM2, COM3 or COM4.

Base Address

Set the base address via the 7 position dip switch labeled Base Address. Figure 1 shows the base address switch

set for COM1 and COM2 address. The addresses for the COM ports are:

COM1 = 3F8h (All switches down)

COM2 = 2F8h (Switch 8 UP)

COM3 = 3E8h (Switch 4 UP)

COM4 = 2E8h (Switch 8 and 4 UP)

Figure 1. Base Address Select Switches - COM1 and COM2