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805U Radio Modem Module User Manual

Page 52 © April 2011

Appendix A Hayes Commands

The following details all of the Hayes commands supported by the 805U. Default settings are

shown by a “dot”, •

Command Function

ATA Answer Incoming Connection message in controlled mode – the module can

also be set to answer incoming connections immediately or after a certain

number of attempts (see S-Register S0) - the default for S0 is 1, meaning that

the module will normally automatically answer on the first connection attempt.

If you want to use ATA, S0 should be set to zero or a larger number.

ATB Set Radio Baud Rate – Radio Baud rates are 19 200, 38 400 and 76 800 baud.

B0•

19 200 baud B1 38 400 baud

B2 76 800 baud

ATC Serial Baud Rate selection / Automatic Baud Detection control

C0 115,200 baud

C1 1200 baud C7 28,800 baud

C2 2400 baud C8 31,250 baud

C3 4800 baud C9 38,400 baud

C4•

9600 baud C10 57,600 baud

C5 14,400 baud C11 76,800 baud

C6 19,200 baud C12 115,200 baud

ATD Connection/Dialling Control. Dial a specific remote or a stored number. Used

in single-connect controlled mode (master module).

ATDSn Dial stored number “n” - see AT&Z for storing numbers

ATE Local Echo Control. Enable / Disable Command Echo.

E0 Disable Local Echo

E1•

Enable Local Echo

ATH Disconnect link in controlled mode. “Hang up” control.

ATI Module Identity / Firmware version - returns the software version number.

ATO Go to “on-line” (operating mode)

ATQ Quiet mode (Suppress/enable response codes) see details of Response Codes

later in this section.

Q0•

Enable response codes

Q1 Disable response codes

ATSn? Read value from S-Register n - see description of S registers later in this

section

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ELPRO 805U Bedienungsanleitung Seite 51