Feature CPU 226 Physical size (mm) 190 x 80 x 62 Program memory: with run mode edit without run mode edit 16384 bytes 24576 bytes Data memory 10240 bytes Memory backup 100 hours typical Local on-board I/O Digital Analog 24 In/16 Out -- Expansion modules 7 modules1 High-speed counters Single phase Two phase 6 at 30 kHz 4 at 20 kHz Pulse outputs (DC) 2 at 20 kHz Analog adjustments 2 Real-time clock Built-in Communications ports 2 RS--485 Floating-point math Yes Digital I/O image size 256 (128 in, 128 out) Boolean execution speed 0.22 microseconds/instruction Picture