... PLC are squeezed into a compact body which requires minimal installation area for an overall reduction in the device size. *The five-module ... design frexibility for number of modules.2.Module specifications that allow you to design as ... desire.Backplanes for 5, 7, 9, 12, and 14 modules are available, and since ... .Memory units for comment, calendar timer, expansion RAM, and ROM operation are available so ...