
| DART 200 CDPD Modem User’s Guide | F DART AT Command Set | 
Table F-1.  Commands beginning with letters (cont.)
XExtended Result Codes
Selects whether the DART enables extended result codes. By default all result codes are enabled.
Format:
| ATX0 | Enable only codes 0...4 Extended results are mapped as appropriate to code 0...4 | 
| ATX1 | Enable all extended result codes (default) | 
| Result codes: | 
 | 
| OK | Valid argument | 
| ERROR | Invalid argument | 
Z Soft Reset
Performs a soft reset on the DART, aborting any active connection, and resets all modem profile parameters to their saved values. The network registration status is not affected.
| Format: | 
 | 
| ATZ | Perform soft reset | 
| Result code: | 
 | 
| OK | Command complete | 
?Read Selected Register
Returns the value of the register selected by the S command.
Format:
AT?Read value of most recently selected register
ATSn?Read value of register <n>
ATS?Read value of register 0
Result codes:
A numerical value, decimal or hexadecimal (denoted by a leading 0x), representing the contents of the specified 
| ERROR | Invalid register number | 
=Write Selected Register
Alters the value in the currently selected 
| Format: | 
 | 
| ATSn=x | Set register <n> to <x> | 
| AT=x | Sets selected register (last one referenced explicitly) to <x> | 
| Result codes: | 
 | 
| OK | Valid parameter value | 
| ERROR | Invalid value for selected register, or register is read only (RO) | 
| NOT ENABLED | Must be in Service Provider mode to alter this register | 
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| Sierra Wireless, Inc. | 
