ProSoft Technology MVI56-104S - Manual (Page 42)

MVI56-104S ♦ ControlLogix Platform Configuring the MVI56-104S Module
IEC 60870-5-104 Server Communication Module User Manual
Page 42 of 188
ProSoft Technology, Inc.
November 18, 2009
2.6.5 Parameter Offset
This parameter specifies the IOA (Information Object Address) offset to the
parameter data for the normalized parameter data. The value entered is added to
the Information Object address for the associated point to compute the
parameter IOA address.
The Master may send a "Parameter of Measured Normalized" or "Parameter of
Measured Scaled" command using the parameter IOA in order to change the
deadband values for specific points.
Note: The Low Limit and High Limit values are always calculated based on the deadband value as
described in the following table.
Point Value
Threshold Determined by the deadband set in the configuration file or altered by the write
command.
Low Last reported event value - threshold.
High Last reported event value + threshold.
For example, if the MVI56-104S configuration sets two M_ME_NA points with
IOA (Point #) of 600 and 601 and a M_ME_NA Parameter Offset value of 3000, it
would result in the parameter points shown in the table.