Product Description
The S7-200 SMART CPU family includes fourteen CPU models, separated into two lines: theCompact Line and the Standard Line. The first letter of the CPU designator indicates a line,either Compact (C) or Standard (S). The second letter of the designator indicates AC powersupply / relay outputs (R) or DC power supply / DC transistor (T). The number in thedesignator indicates the total onboard digital I/O count. The new compact models aredesignated by a lower case "s" character (serial port only) following the I/O count.