ProSoft Technology 5201-DFNT-DNPS - Manual (Page 61)

Reference ProLinx DNPS ♦ ProLinx Gateway
User Manual DNP 3.0 Slave
ProSoft Technology, Inc.
Page 61 of 86
December 1, 2009
DNP Counter Data
This data type stores accumulated count data. These data are stored in the
module in a double word value and have a data range of 0 to 4,294,967,296. The
size of this data area is determined from the configuration parameter Counters.
The other protocol transfers data of this type to the module using the read
operation. The module maintains two values for each counter point: a current
running value and a frozen value. The DNP master must send the freeze
command to the module in order to transfer the current running values to the
frozen area.
Note: The freeze-reset command is not supported in the data transfer operation. There is no way
to guarantee counts will not be lost using the freeze-reset operation, therefore, this feature is not
implemented.
The following illustration describes data flow for the counter data.