The FA2J features expanded internal registers compared to its predecessors: FA2J Capacity 608 points (240 can be maintained) Shift Registers 128 points (all retentive) Timers 80 points (10ms and 100ms versions) Counters 45 points (adding, 0–9,999) Data Registers 400 points (all retentive) High-Speed Counter Available for fast pulse input Advanced Instruction Examples Idec FA-2J manual | PLCtalk - Interactive Q & A