IEC-61850-MMS Client Test Suite can be used to test the robustness, security and reliability of IEC-61850 protocols running top of MMS. It discovers faults in a target software by feeding it with invalid, incorrect and malformed data and data structures. IEC-61850 protocol is used as communication protocol between substations. IEC-61850-MMS Client Test Suite can load save PCAP contains MMS sequence and create a test sequence with load values. This is easy way to create correct sequence with valid values.