drain chain with fup?

If you need to create a drain chain using FUP (Function Block Diagram) programming in Siemens TIA Portal, you can try to follow these steps:

• First, create a function block that represents the drain chain. This function block should have one input and one output.

• In the function block, add a memory bit (M) that will be used to trigger the drain chain. This memory bit should be set to 1 when the function block is first called.

• Connect the input of the drain chain function block to the output of the function block that you want to reset.

• Connect the output of the drain chain function block to the input of the function block that you want to reset.

• Use a branch instruction to check the status of the memory bit at the beginning of the drain chain function block. If the memory bit is set to 1, then reset the internal states of the function block and set the memory bit to 0.

• Continue the drain chain by passing the input value to the output, so that it can be used by the next function block.

• At the end of the drain chain, set the memory bit to 1 again to prepare for the next execution of the function block.