ZyXEL Communications U-1496 series Bedienungsanleitung PDF herunterladen (Seite 42)

to set only bit 'b' of S-Register 'r' to value 'n' without affecting other bits in this S-Register.

When using ATSr = n, you need to do a conversion to or from the binary number to find out the

bits. For example, if you want to set S38 bit 3 to 1 for a specific application:

Do an ATS38 = ? to find the original value.

Convert it to binary:

Bit Binary Value Decimal Value Sedecimal Value We Use

0 00000001 1 $01

1 00000010 2 $02

2 00000100 4 $04

3 00001000 8 $08 *

4 00010000 16 $10

5 00100000 32 $20

6 01000000 64 $40

7 10000000 128 $80

To set a bit to '1', do a logic OR with the value:

10001000 136 $88 01000000 64 $40

OR 00001000 8 $08 00001000 8 $08

10001000 136 $88 01001000 72 $48

To set a bit to '0', do a logic NOT AND with the value:

NOT 00001000 8 $08 00001000 8 $08

11110111 247 $F7 11110111 247 $F7

AND 10001000 136 $88 01000000 64 $40

10000000 128 $80 01000000 64 $40

Using the decimal value, do an ATS38 = n to set the register.

Using ATS38.3 = 1 to do the same is much easier.

Note: If you enter values from the U-1496 front panel, use the sedecimal (hex) values.

S-REGISTER DESCRIPTIONS

Following are the descriptions for each S-Register. In most bit mapped S-Registers, the default

bit value is 0 which is the normal situation and only the non-default situation is described. Some

reserved bits are for factory use and the user should not change them.

S0 Default= 0; Sets the number of rings on which the modem will answer automatically.

S0=0 disables autoanswer. The range of rings is 0 to 255. (Country specific)

S1 Default=0; Counts the incoming rings and stores the value to this register. User can

read but should not change this value.

S2 Default=43; S2 holds the ASCII decimal value for Escape Sequence character.

Default character is "+". A value of 128-255 disables the escape code.

S3 Default=13; Holds the ASCII decimal value of Carriage Return character.

S4 Default=10; Holds the ASCII decimal value of Line Feed character.

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ZyXEL Communications U-1496 series Bedienungsanleitung Seite 42