ProSoft Technology MVI71-DNP - Manual (Page 110)

MVI71-DNP ♦ PLC Platform Reference
DNP 3.0 Master/Slave Communication Module
Page 110 of 172 ProSoft Technology, Inc.
August 23, 2007
IED Binary Input Data
This data area stores binary input data retrieved from IED units attached to the
DNP master port. The size of the data area is determined by the configuration
parameter Number of Binary Input Points for IED. The command list polls IED
units for their binary input data and to place the data in the database. The PLC
program uses this input data for monitoring and control in the ladder logic
program. The module transfers these data using BTR instruction and blocks
1000 to 1015. This provides for 15360 binary input points.
IED Binary Output Data
This data area controls IED units attached to the DNP master port. The size of
the data area is determined by the configuration parameter Number of Binary
Output Points for IED. The command list sends the control values in this
database to the IED units. The PLC ladder logic program is responsible for
setting the values in this database. This provides direct control of IED units by
the PLC program. The module transfers these data using BTW instruction and
blocks 1020 to 1035. This provides for 15360 binary output points.
IED Counter Data
This data area stores counter and frozen counter data retrieved from IED units
attached to the DNP master port. The size of the data area is determined by the
configuration parameter Number of Counter Points for IED. The command list
polls the IED units for their counter or frozen counter data. The PLC program
uses this data for monitoring or control in the ladder logic program. The module
transfers these data to the PLC using BTR instruction and blocks 1040 to 1055.
This provides for 480counter points.
IED Analog Input Data
This data area stores the analog input data retrieved from IED units attached to
the DNP master port. The size of the data area is determined by the
configuration parameter Number of Analog Input Points for IED. The command
list polls the IED units for their analog input data. The PLC program uses this
input data for monitoring and control in the ladder logic program. The module
transfers these data using BTR instruction and blocks 1060 to 1075. This
provides for 960 analog input points.
IED Analog Output Data
This data area controls IED units attached to the DNP master port. The size of
the data area is determined by the configuration parameter Number of Analog
Output Points for IED. The command list sends the control values in this
database to the IED units. The PLC ladder logic program is responsible for
setting the values in this database. This provides direct control of IED units by
the PLC program. These data are transferred to the module from the PLC using
the BTW instruction and blocks 1080 to 1095. This provides for 960 analog
output points.