• TMCL: Read Analog Value

    TMCL is the simple way to implement your motion control application. With this series of simple coding examples we want to provide you an easy start.

    This program demonstrates how to read an analog value and adjust the velocity of motor 0. The velocity depends on the analog value obtained at Port AIN_0. In the easiest case connect a pontiometer to Port AIN_0.

    Before use: Restore Factory Defaults

    // *** Values that have to be adapted *** //
amax = 1000				//max. acceleration (0 ... 2047)
cmax = 100				//max. current (0 ... 255)

// *** Initialization / Set up axis parameter *** //
SAP 5, 0, amax			//set max. acceleration
SAP 6, 0, cmax    		//set max. current

MST 0					//switch to velocity mode

// *** Main Loop *** //
loop:
	GIO 0, 1    		//get 12 bit analog value of AIN_0 (0 ... 4095) and store in the accumulator
	CALC DIV, 2			//divide analog value by 2 and store in the accumulator
	AAP 2, 0			//change the velocity (0 ... 2047) to the value stored in the accumulator
	JA loop				//jump to loop

    For more details look at TMCL_reference.pdf  at http://www.trinamic.com/software-tools/tmcl-ide

    This sample is tested with TMCM-1161 and is compatible with Modules with 12-Bit Analog input. Modules with 10Bit analog input are not compatible.

    October 15, 2015 / Jonas P. Proeger / 2

    Categories: Code Snippet, Tutorial

    Tags: ,

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    2 thoughts on “TMCL: Read Analog Value”

    • Jess says:
      August 29, 2018 at 2:30 am

      This was very helpful but is there any way to do a 0-10v = 0-360 degrees or one full rotation??

    • Lars Jaskulski says:
      September 11, 2018 at 9:15 am

      Hi Jess,
      In general this is possible and by adapting the basis of the code you should be able to achieve that. You can read up the TMCL commands with the Firmware manual with the module you are writing the program. You might need a hysteresis as otherwise the motor axis might jitter caused by noise on the analog voltage signal.
      If you need further help and / or support please do not hesitate to use our support system. You will find a blue button on our main webpage on the bottom right corner: http://www.trinamic.com
      Best regards,
      Lars

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