24V Pulse Extender

Not quite PLC related but looking for an off-the-shelf device that can extend a 24VDC 0.5ms pulse to 2ms.

Simple off delay timers usually have a 1.0ms input. These would not work in your case.

I would suggest a small Click PLC with Ethernet. This has high-speed functions in the unit.
https://www.automationdirect.com/adc/shopping/catalog/programmable_controllers/click_series_plcs_(stackable_micro_brick)/plc_units/c0-11dd2e-d

Click High-Speed Functions:
https://accautomation.ca/click-plc-high-speed-counting-part-1/
https://accautomation.ca/click-plc-high-speed-counting-part-2/

Hope this helps you out.
Regards,

IFM makes a "pulse stretcher" with a 0.2 ms minimum input, but it has a longer (25 ms) output.

https://www.ifm.com/us/en/product/E80110

We've used the Turck "Smart Plug" which is their version of a pulse stretcher.
http://old.turck.us/Products/Sensors/Smart_Plugs/


A nice feature is that it plugs inline with a M12 sensor cordset, giving you an extended output signal to your PLC. As I recall, you set the delay time by manually holding one of the plug leads at 24V. (They make a little gadget for this.) So the delay time is not very precise--the idea is that it's long enough for a slow PLC to recognize the signal.