Iec-104 Settings - Viola Systems Arctic IEC-104 User Manual

New connection priority
Defines the action when a new connection request arrives while a connection is already active. If
the set value is "No" the new connection is rejected. If the set value is "Yes" the present
connection is terminated and the new connection is accepted.
New connection priority for IEC-104 connections
Type
Units
Value range
Note

IEC-104 settings

The IEC-104 settings define the properties of IEC-104 link layer and application layer parameters
as described in the IEC 60870-5-104 standard. The IEC-104 communication is carried out
between the Arctic and the IEC-104 master over the TCP/IP network.
TX window size (k)
Defines the maximum number of I format APDUs the Arctic may send before requiring the IEC-104
master to acknowledge them. If there are k unacknowledged frames sent the Arctic will stop polling
IEC-101 slave for events until acknowledgement is received.
IEC-104 TX windows size (k)
Type
Units
Value range
Note
Arctic IEC-104 Gateway
Boolean
N/A
No, Yes
It is recommendable to set this value to "Yes" in normal
configurations having only one IEC-104 master.
Window size
Packets
1-20
The k must be always less than the maximum sequence
number defined below. The IEC-104 standard suggests k to
be 12.
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User's Manual
Viola Systems Ltd.