Program configuration

This window is used to modify the program parameters. It is accessed by clicking on the program button above the wiring sheet.

Parameter for adjusting the basic cycle time of the controller

A user program is represented as a wired circuit containing components (functions).

In order to be executed by the controller, the program is translated into a series of ordinate instructions, where each instruction corresponds to a user program function.

Sequence of the instructions:

This sequence of instructions (functions) is executed periodically, i.e. at regular intervals. This fixed time interval is called the "basic cycle". This period therefore corresponds to the sampling period of the analog data read into the controller and its extensions and to the refresh period of the outputs of the controller and its extensions.

In the "program configuration" window, the programmer can multiply the execution time interval known as the basic cycle by entering an integer value in the "Adjustment of the basic cycle time of the controller" field.

In this case, the sequence of instructions executed on the controller will be executed at intervals of duration N times the duration of the basic cycle.

Thus, the sampling period of the input values and the update period of the output values is also fixed at N times the duration of the basic cycle. Please check that any excessively quick input changes are not masked by this slower sampling period and ensure that the rate of change of the outputs is compatible with the systems controlled.

The program (sequence of instructions) has N times the cycle duration in which to be executed and the programmer can then edit a program containing more functions. The pulse durations which appear as parameters for the various timer functions are not affected.

However, the two IN functions, "Filtered digital input" and "Filtered analog input", the filtering duration and the cut-off frequency (parameters of these functions) are recalculated when the corresponding parameterisation window is opened. The user must check if the new values of these parameters are compatible with the rate of change of the input signals.

Date Format

Pressing the "Configure..." button (opposite the Date Format line) opens the Date Format dialogue window.

Parameter: frequency of all controller PWMs

The PWM outputs of controllers which have them can be modified globally using this parameter in order to adapt to the pass band of the devices controlled by the outputs of the controller.

Important note:

If a single remote extension or a single controller is connected in remote mode to the controller executing the program concerned, the extension inputs are sampled and the extension outputs are refreshed at a period equal to the cycle selected for program execution.

If two remote extensions or a controller and an extension are connected in remote mode to the controller executing the program concerned, the extension inputs are sampled and the extension outputs are refreshed at a period equal to 2 times the duration of the cycle for program execution.

If two remote extensions and a controller are connected in remote mode to the controller executing the program concerned, the extension inputs are sampled and the extension outputs are refreshed at a period equal to 3 times the duration of the cycle selected for program execution.

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