13
Chapter 2
2.2 Switch and Jumper Settings
Ease-of-use was a primary design goal when we designed the
PCM-3718 Series. This module has one function switch and seven
jumper settings. The following sections tell you how to configure the
module. You may want to refer to the figure on page 5 to easier locate
the jumpers and switches.
2.2.1 Base Address Selection (SW1)
You control PCM-3718’s operation by reading or writing data to the PC’s
I/O (input/output) port addresses. PCM-3718 requires 16 consecutive
address locations. The switch SW1 sets the module’s base (beginning)
address. Valid base addresses range from Hex 000 to Hex 3F0. Other
devices in your system can use some of these addresses.
PCM-3718’s base address was set to Hex 300 at the factory. If you need
to adjust it to other address ranges, set SW1 by referring to table 2.1
* = default
Table 2.1: Module I/O Addresses (SW1)
Range (hex) Switch position
1
2
3
4
5
6
000 - 00F
Off
Off
Off
Off
Off
Off
010 - 01F
Off
Off
Off
Off
Off
On
:
200 - 20F
On
Off
Off
Off
Off
Off
210 - 21F
On
Off
Off
Off
Off
On
:
*300 - 30F
On
On
Off
Off
Off
Off
:
3F0 - 3FF
On
On
On
On
On
On
Note
Switches 1-6 on SW1 control the PC bus address
Table 2.2: PC bus Address Control
Switch
1
2
3
4
5
6
Line
A9
A8
A7
A6
A5
A4
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