Binary input command examples – ProSoft Technology MVI46-DNP User Manual
Page 23
Configuring the Module
MVI46-DNP ♦ SLC Platform
Master/Slave Communication Module
ProSoft Technology, Inc.
Page 23 of 143
August 23, 2007
Commands are issued by the DNP master port based on the following criteria:
Commands issued each scan
Enabled, Poll Interval = 0 and binary and analog outputs have exception bit =
0
Commands issued at poll time
Enabled, Poll Interval > 0 and binary and analog outputs have exception bit =
0
Commands issued on data change (BO and AO)
Enabled and binary and analog outputs have exception bit = 1
The master port task cycles through the command list sequentially, searching for
commands to execute. Commands that meet one of the criteria above are
executed.
The following illustrations describe examples of binary input and binary output
commands.
BINARY INPUT COMMAND EXAMPLES:
Port/Flg
Slave
Object
Var
Func
Addr Pnt Cnt DNP DB IED DB Poll Int
WORD
0
1
2
3
4
5
6
7
8
9
VALUE
6
15
1
0
1
0
-32
200
-1
2
IED #15
DNP BI's
Address
Address
0
200
31
231
NOTE:
Data directly accessible by remote DNP
master. Data not accessible by PLC.
Events generated by IED unit not by module.
Command for Port 2, Enabled, RBE flag not set.
IED Unit 15 is to be polled.
Object type is 1 (Binary Input).
Variation of 0 (default variation).
Function 1 is for a read.
Slave address ignored (Qual 6, all points).
Point count of -32 indicates only first 32 points are
to be used.
DNP DB address of 200 is where first data point
will be placed.
IED DB is not used (-1).
Poll command every 2-seconds.
Port/Flg
Slave
Object
Var
Func
Addr Pnt Cnt DNP DB IED DB Poll Int
WORD
0
1
2
3
4
5
6
7
8
9
VALUE
6
15
1
0
1
0
-32
-1
0
2
IED #15
IED BI's
Address
Address
0
0
31
31
NOTE:
Data not accessible by remote DNP
master. Data accessible by PLC.
No DNP data so RBE flag ignored.
Command for Port 2, Enabled.
IED Unit 15 is to be polled.
Object type is 1 (Binary Input).
Variation of 0 (default variation).
Function 1 is for a read.
Slave address ignored (Qual 6, all points).
Point count of -32 indicates only first 32 points are
to be used.
DNP DB is not used (-1).
IED DB address of 0 is where first data point is
placed.
Poll command every 2-seconds.