Pulse Generators Embedded Function

Overview

The pulse generated embedded functions available with the M241 are:

PTO	The PTO (Pulse Train Output) implements digital technology that provides precise positioning for open loop control of motor drives.
PWM	The PWM (Pulse Width Modulation) function generates a programmable square wave signal on a dedicated output with adjustable duty cycle and frequency.
FreqGen	The FreqGen (Frequency Generator) function generates a square wave signal on dedicated output channels with a fixed duty cycle (50%).

Follow these steps to access the Pulse Generators configuration window:

Step	Description
1	Double-click Pulse Generators on the Devices tree. The Pulse Generation Function window appears:
2	Double-click Value and choose the pulse generator function type to assign.

Step

Description

Double-click Pulse Generators on the Devices tree.

The Pulse Generation Function window appears:

Double-click Value and choose the pulse generator function type to assign.

The figure shows a sample Pulse_Generators configuration window used to configure a PTO, PWM, or FreqGen function:

The following table describes the areas of the Pulse_Generators configuration window:

Number	Action
1	The instance name of the function and the currently configured pulse generator function type .
2	Click + to configure a new instance of pulse generator function.
3	Double-click the Value column to display a list of the pulse generator function types available.
4	Double-click the Instance name value to edit the instance name of the function. The Instance name is automatically given by EcoStruxure Machine Expert. The Instance name parameter is editable and allows you to define the instance name. However, whether the Instance name is software-defined or user-defined, use the same instance name as an input to the function blocks dealing with the counter, as defined in the Counters editor.
5	Configure each parameter by selecting the parameter value from the list to access its settings. The parameters available depend on the type of parameter selected.

For detailed information on configuration parameters, refer to the Modicon M241 Logic Controller PTO/PWM - Library Guide.