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9 at^swdac configure and read pwm signal for dac, Ac75 at command set – Siemens AC75 User Manual

Page 506

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AC75 AT Command Set

19.9 AT^SWDAC

s

AC75_ATC_V01.002

Page 506 of 569

10/30/06

Confidential / Released

19.9

AT^SWDAC Configure and Read PWM Signal for DAC

The

AT^SWDAC

controls the PWM (Pulse Width Modulation) signals generated by means of the DAC_OUT pin

of the AC75 Module. The DAC_OUT pin is not available on the the AC75 Terminal, therefore

AT^SWDAC

applies

only to the AC75 Module.

Syntax

Parameter Description

Duty cycle in percentage steps
0...100

Open or close DAC
0

Close DAC

1

Open DAC

PWM frequency
0

320 Hz (accuracy of 1 percentage step)

1

970 Hz (accuracy of 3 percentage steps)

2

8,125 Hz (accuracy of 1 percentage step)

3

16,250 Hz (accuracy of 1 percentage step)

Test Command

AT^SWDAC=?

Response(s)

^SWDAC:

(list of supported

s), (list of supported

s), (list of supported

s)

OK

Read Command

AT^SWDAC?

Response(s)

^SWDAC:

,

,

OK

ERROR

+CME ERROR:

Write Command

AT^SWDAC=

[,

[,

]]

Response(s)

OK

ERROR

+CME ERROR:

Reference(s)

PIN

ASC0 ASC1 USB MUX1 MUX2 MUX3 Charge

4

Last

SIEMENS

-

+

+

+

+

+

+

-

+

-

(num)

(num)

(num)