Working

⚙️ Overview: What does this function block do?

FB_ProductBuffer_NoArray_TCK is a FIFO-style product buffer for a PLC, that:

Detects incoming products via a rising edge on a sensor
Stores each product's timestamp (based on PLC runtime using TIME_TCK)
Waits a defined delay (TimeDelay) per product
Starts a movement trigger (TriggerMovement := TRUE) once the delay has passed
Waits for external feedback (TriggerFeedback := TRUE) before processing the next product

All of this happens without arrays, using STRUCTs with fixed entries like _0, _1, … _9.

Name	Type	Description
`SensorInput`	`BOOL`	Digital input from the product detection sensor
`TimeDelay`	`TIME`	The wait time required per product before triggering movement
`SystemTime`	`TIME`	The current PLC runtime time (from `TIME_TCK`)
`TriggerFeedback`	`BOOL`	External signal indicating the current movement is complete
`TriggerMovement`	`BOOL`	Output signal to start a movement
`ProductCount`	`INT`	The number of currently buffered products waiting to be processed

Variable	Purpose
`StartTimes._x`	Timestamp of when a product was added to buffer slot `_x`
`Actives._x`	Flag indicating whether slot `_x` is active (has a product)
`InsertIndex`	Index of where the next product should be added (0–9, wraps around)
`PrevSensor`	Stores the previous sensor value for edge detection
`MovementActive`	TRUE when a movement is in progress
`Elapsed`	Time difference (in ms) between `SystemTime` and product StartTime

F SensorInput AND NOT PrevSensor THEN