ProSoft Technology MVI71-DNP - Manual (Page 77)

Reference MVI71-DNP ♦ PLC Platform
DNP 3.0 Master/Slave Communication Module
ProSoft Technology, Inc. Page 77 of 172
August 23, 2007
5.1.4 Functional Specifications
The module has two DNP protocol ports that can be user configured to operate in
a Master/Slave or in a Slave/Slave redundant port configuration.
User defined internal register space is accessible to the protocol driver and to the
PLC processor memory.
DNP 3.0 Slave Protocol Specifications
The DNP Slave port(s) accepts DNP commands to control and monitor data
stored in the module's DNP Slave databases. If a DNP Master port is also
configured, a portion of these slave databases can be derived from or can control
IED devices connected to the DNP master port.
ƒ
Report-by-Exception data is logged to the module's database
ƒ Supports unsolicited messaging
ƒ Each DNP point type is user configurable by point
ƒ Class assignments are completely user-definable on a Type and point basis
(BI, AI, FI point types)
ƒ Supports clock synchronization from a master or from the processor
ƒ Up to 400 events are stored for Floats, Binary In and Analog In Inputs
ƒ Collision avoidance algorithm per DNP organization for redundant port
switching (redundant slave mode)
ƒ Special modem AT command string and timing support for dialing out on
redundant port (redundant slave mode)
DNP 3.0 Master Protocol Specifications
The DNP 3.0 Master port can be configured as a virtual DNP Master device that
actively issues user-defined DNP commands to nodes on the network.
ƒ
The Master port supports 300 user defined commands, each one containing
its own set of data link and application layer characteristics
ƒ Master port logically supports up to 40 slave devices
ƒ Individual command configuration includes conditional or continuous polling
and Poll Delay Time
ƒ Slave status and Command status available for transfer to the processor
ƒ Event data received from the slave devices updates the module database
(Date and Time stamping is not stored or used by module)
ƒ Special command handling for Digital Output CROB under processor control
for pulse output control
DNP 3.0 ports (PRT1 & PRT2)
ƒ
User-definable module memory usage
ƒ Full radio, modem and multi-drop support
ƒ Support for the storage and transfer of all DNP data types across the
backplane
ƒ Communication parameters
o
Address: 0 to 65534 (slave mode)
o
Baud rate: 110 to 115K
o
Parity: none, data bits: 8, Stop bit: 1
o
RTS on delay: 0 to 65535 milliseconds
o
RTS off delay: 0 to 65535 milliseconds