I need to be able to reset the counter remotely using a pulse from a proximity switch (12V DC). My application does not require the count down function. Would it be OK to isolate the collector of T7 from its pull-up resistor and connect it to IC1 Pin 17 ? As I could manage without the internal reset button, I could also isolate this from from its pull-up, R23. However, as both reset circuits simply pull Pin 17 down to 0V, would it be possible to leave Sw 4 connected giving me a remote and local reset function.?
Hope you can help,
Regards,
Gordon.