STEP 7 Lite V3.0 including Service Pack 4 (SP4) is now available for downloading.The software can be installed directly on a PC, or installed over the existing STEP 7 Lite software. The SP4 of STEP 7 Lite supports the new modules that were introduced to the market since the delivery release of version 3.0. STEP 7 Lite V3.0 incl. SP4 has been released for the operating systems MS Windows XP Home and MS Windows XP Professional. With the introduction of Service Pack 4 the existing STEP 7 Lite software has been declared a mature product.