ProSoft Technology MVI56-104S - Manual (Page 36)

MVI56-104S ♦ ControlLogix Platform Configuring the MVI56-104S Module
IEC 60870-5-104 Server Communication Module User Manual
Page 36 of 188
ProSoft Technology, Inc.
November 18, 2009
2.4.16 Freeze Start Type
D=Day, H=Hour, M=Minute, N=Not used
The Freeze Start Type parameter defines when the module starts sending the
M_IT messages.
2.4.17 Interval for Freeze
0 to 65535
Freeze Start Type and Interval for Freeze are used if Mode A operation is to be
used for the counter freeze operation. If they are not used, the module will
operate in Mode D.
2.4.18 Set Priority Queues
Yes or No
This section defines priority queues for the module. You can assign priorities to
data types that can return events so that events of data types will be returned
before other data types. This may cause events to be lost as the event buffers for
low priority queues may overflow. If this feature is utilized, each data type must
be assigned a unique index from 0 to 6. The lower the index, the higher the
priority (0=highest priority).
Each of the ASDUs affected by this feature must be assigned a unique priority
index from 0 to 6. Events of the ASDU with a priority of 0 will always be reported
before any others when they are present.
For more information, refer to Event Priority.