Event Support

IEC60870-5-101/104 servers support events:

  • The event function can be disabled/enabled by a datatype ID.

  • The event function can be disabled/enabled by a data point.

  • The event time format can be configured by a datatype ID.

  • The time format for events can be an option of None/CP56.

  • The timestamp for the event is the local time with the summer/winter flag set.

  • You can configure the event buffer size through the datatype ID and channel. The buffer capacity is 150,000 events for all channels. Only the newest events are saved when the buffer events consume more space than is configured for the buffer.

  • The buffer retains events when a channel is disconnected. Events are expelled from the buffer when a SCADA systems is connected.

  • The event buffer is cleared in this situations:

    • A clear-event point is set in the CPU.

    • A remote command with a qualifier event is received.

Event Backup Support

IEC60870-5-101/104 servers support the backup of events:

  • Events are backed up in these situations:

    • power loss

    • Hot Swap of the module

  • The BMENOR2200H module supports the backup of up to 10,000 events upon a power loss. Only the newest events are saved if the number of events exceeds 10,000.

  • The BMENOR2200H module supports the backup of at least 5,000 events when the module is Hot Swapped. Only the newest events are saved in the event buffer.

  • Backup events are restored to the RTU protocol stack after power is restored only when the configuration matches the previous one. Otherwise, backed-up events are discarded.

  • Backed-up events are cleared when the CPU module cold restart (for example, when a new configuration is downloaded). In this case, communications are reset.

  • You can enable or disable the event backup function.

On-Demand Mode

IEC60870-5-101/104 servers support on-demand mode for these set-point commands:

  • C_SE_NA

  • C_SE_NB

  • C_SE_NC

  • C_BO

NOTE:

  • These points support the setting of the local Device DDT variable or %MW register.

  • These points support the setting of the IEC60870-5-101 master with a remote command.

Local Cyclic Freeze (M_IT)

IEC60870-5-101/104 clients support the cyclic freeze function for M_IT points:

  • You can disable this function.

  • This function can start automatically after the modules starts up, or it can be controlled but a running CPU Device DDT variable.

  • This function supports the setting of a freeze period for every group.

  • This function supports the Freeze-Only/Freeze-with-Reset operation mode.

Trigger Freeze: M_IT

IEC60870-5-101/104 clients support the trigger freeze function through M_IT points:

  • This function is controlled by a CPU Device DDT variable. A change in the value of the variable triggers the operation.

  • This function supports the Freeze-Only/Freeze-With-Reset operation mode.

  • A local trigger freeze supports the freezing of a specified group.