Executed FB every cycle

PLCnext Engineer
1

Hi,
the documentation states, that FB with a REQ input are executed, when a rising edge is detected. Is it possible to execute a FB with a REQ input every cycle?

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2

Hello ingfu,
if the FB can be executed in one task cycle, it is possible (e.g. the FB increments a variable value). However, most FBs require more than one task cycle to execute. And it is the reason why, e.g the “Ready”-Output (ready for executing) is implemented.
BR Eduard

3

Hi Eduard,
thanks for Your response. How do I achieve that? Do I have to call the FB twice within one cycle to achieve the rising edge?