... alarm thresholds, marker state change, counters and clocks. In particular, x-Messenger shall possess industrial design, practical set ... / off-delays, pulse relay ,counters ,Watchdog function ,PI controller etc..Ø Logic functions-AND, OR, NOT, XOR……Ø Standard ... Data logging ( SD card socket built-in/ optional accessory)Ø Access protection by passwordØ Diagnostic LEDsØ DIN rail/Wall mounting Ø Max ...