SCADA: positive counting In #PLC,#ABB-PLC & Intouch SCADA@Communication - видео HD

A counter is a PLC instruction that either increments (counts up) or decrements (counts down) an integer number value when prompted by the transition of a bit from 0 to 1 (“false” to “true”). Counter instructions come in three basic types: up counters, down counters, and. up/down counters.