This is a timer library for Arduino that provides Timer On Delay (TON), Timer Off Delay(TOF), and Retentive Timer On(RTO) timers similar to Allen Bradley PLC timers. I want to note that I'm not a ...

Abstract: Programmable logic controllers (PLCs) are widely used in embedded systems. A timer plays a pivotal role in PLC real-time applications.The paper presents a formalization of TON-timers of PLC ...

PLC.disconnect (); closes connection to the target PLC (verified on a CompactLogix 5069-L310ER/A) but doesn't clean up the timers left behind which is why the script hangs for roughly 30 secs before ...