Control-Software for Simatic S7 PLC and Logo 0BA7
S7Droid is a mobile software solution for operating Simatic S7 PLC. To communicate with a S7 device or the new Siemens Logo 0BA7 with Ethernet Port. You need a Ethernet Communication Processor (CP343-?? Or CP443-?? OR CP243). Connection is possible over WiFi or Mobile Network (UMTS with VPN). You can control the whole memory of the plc like inputs, outputs, flags or datablocks.

Link: S7Droid Lite