6
© Sealevel Systems, Inc. 3720 Manual | SL9019 7/2021
Card Setup
Address Selection
The DIO-104.OPTO
occupies 4 consecutive I/O locations. The DIP-switch (S1) is used to set the base
address for these locations. Be careful when selecting the base address as some selections conflict with
existing PC ports. The following table shows several examples that usually do not cause a conflict. Even
though four I/O addresses are decoded, only the first two are actually used, the other two ports are to
maintain compatibility with existing Sealevel Systems adapters.
Address
Binary
Switch Settings
A9
A8
A7
A6
A5
A4
A3
A2
1
2
3
4
5
6
7
8
100-103
01 0000 00xx
On
Off
On
On
On
On
On
On
104-107
01 0000 01xx
On
Off
On
On
On
On
On
Off
200-203
10 0000 00xx
Off
On
On
On
On
On
On
On
280-283
10 1000 00xx
Off
On
Off
On
On
On
On
On
284-287
10 1000 01xx
Off
On
Off
On
On
On
On
Off
2EC-2EF
10 1110 11xx
Off
On
Off
Off
Off
On
Off
Off
300-303
11 0000 00xx
Off
Off
On
On
On
On
On
On
320-323
11 0010 00xx
Off
Off
On
On
Off
On
On
On
388-38B
11 1000 10xx
Off
Off
Off
On
On
On
Off
On
3A0-3A3
11 1010 00xx
Off
Off
Off
On
Off
On
On
On
3A4-3A7
11 1010 01xx
Off
Off
Off
On
Off
On
On
Off
The following illustration shows the correlation between the DIP-switch setting and the address bits used
to determine the base address. In the example below, address 300 is selected as the base address. Address
300 in binary is XX 11 0000 00XX where X = a non-selectable address bit.
1 2
3 4 5
6
7
ON
OFF
A9
A2
8
Setting the switch ‘On’ or ‘Closed’ corresponds to a ‘0’ in the address, while leaving it ‘Off’ or ‘Open’
corre
sponds to a ‘1’.
Содержание 3710
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