Change value of Members within Data Type of Stucture

[BITS N BYTES 66]

Trying to figure out how to change values within a Global Variable of Data Type of Structure. I have declared a Data Type as a STRUCTURE with five MEMBERS. Four LREAL and one BOOL. STRUCTURE is named "Par_LREAL". Declared a Global Variable "HMI_Vaxis_SPEED" using the above structure Data Type "Par_LREAL". Within my POU I now wish to use the Global Variable "HMI_Vaxis_SPEED" and modify values of it associated members. Have written ST code to write values to the members. For example the ST statement "HMI_Vaxis_SPEED.Min"=LREAL#10.00;" When I start simulation these values are NOT written automatically though they can be manually modified. Can anyone shed light as to why the code in the POU is NOT writing the values. Baffled!!!

[Andy_P 7]

Have you added the POU to run in a task under "Task Settings"?

[BITS N BYTES 66]

U DA MAN!!! Even though project task settings in project were correct, the checkboxes to"enable" the tasks were unchecked. Checked them and all works great. I have to say that this IS rather confusing and a real GOTCHA if one is not fully aware of the implications of these check-boxes! Thnx a million for your help. Edited 14 Jul 2014 by BITS N BYTES