ZyXEL Communications 2864 Series User Manual page 88

For example, if you want to set S38 bit 3 to 1 for a specific application, you may
either use ATS38.3=1 (simple) or use the following method (difficult):
Note: The values used in the example below differ from the actual values
in the S-register and are used for demonstration purposes only.
• Read the value from S38 using ATS38?.
• Convert it to its binary value, using the following weight table.
Bit Binary value
0 00000001
1 00000010
2 00000100
3 00001000
4 00010000
5 00100000
6 01000000
7 10000000
• To set bit 3 to 1 (binary), do a logic OR operation with the value.
Operation Example 1
Binary
10001000
OR 00001000
10001000
• To set bit 3 to 0 (binary), you must invert the value using a logic NOT oper-
ation and then do an logic AND operation.
NOT 00001000
11110111
AND 10001000
10000000
• Using the result decimal value, do an ATS38=n to set the register.
Note: If you enter values from the LCD front panel, use the hexadecimal
(hex) values.
Decimal value
1
2
4
8
16
32
64
128
Example 2
Dec. Hex. Binary
136 $88 01000000
8 $08 00001000
136 $88 01001000
8 $08 00001000
247 $F7 11110111
136 $88 01000000
128 $80 01000000
8–2
Hexadecimal value
$01
$02
$04
$08
$10
$20
$40
$80
Dec. Hex.
64 $40
8 $08
72 $48
8 $08
247 $F7
64 $40
64 $40