6.2 Communication protocols
6 Communication
Technical description
162
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VM59.EN001
6.2.3.
DNP 3.0
The relay supports communication using DNP 3.0 protocol.
The following DNP 3.0 data types are supported:
binary input
binary input change
double-bit input
binary output
analog input
counters
Additional information can be obtained from the “DNP 3.0
Device Profile Document” and “DNP 3.0 Parameters.pdf”.
DNP 3.0 communication is activated via menu selection. RS-
485 interface is often used but also RS-232 and fibre optic
interfaces are possible.
Parameters
Parameter
Value
Unit Description
Set
bit/s
4800
9600 (default)
19200
38400
bps
Communication speed
Set
Parity
None (default)
Even
Odd
Parity
Set
SlvAddr
1
65519
An unique address for
the device within the
system
Set
MstrAddr
1
65519
255=default
Address of master
Set
LLTout
0
65535
ms
Link layer confirmation
timeout
Set
LLRetry
1
255
1=default
Link layer retry count
Set
APLTout
0
65535
5000=default
ms
Application layer
confirmation timeout
Set
CnfMode
EvOnly (default)
All
Application layer
confirmation mode
Set
DBISup
No (default)
Yes
Double-bit input support
Set
SyncMode
0
65535
s
Clock synchronization
request interval.
0 = only at boot
Set
Set = An editable parameter (password needed)
