The IEC 60870-5-104 Server functionality supported by the module includes: 

 The IEC 60870-5-104 communication driver is built in accordance to the approved 

IEC specification 

 The module functions as a Server on the network supporting data read/write 

commands from an IEC 60870-5-104 client on the network 

 One TCP server socket 

 Supports unsolicited messages, either cyclic or spontaneous (cyclic rate is 

configurable) 

 Supports clock synchronization commands from client or from the ControlLogix 

processor 

 Supports Group interrogation (Global, General 1 to 16, Global Counters, Counters 

1 to 4) 

 Event timestamping configurable by type (None, 24 bit, 56 bit) 

 Event queue supports 99 points for each data type 

 Optional user defined list of acceptable client host IP addresses 

 Configurable Common ASDU address (sector) and Information Object Address 

 An IEC Interoperability Document for the MVI56 is available which fully documents 

data types supported by the module