ProSoft Technology MVI69-101S - Manual (Page 37)

Configuring the MVI69-101S Module MVI69-101S ♦ CompactLogix or MicroLogix Platform
IEC 60870-5-101 Slave Communication Module
ProSoft Technology, Inc. Page 37 of 149
March 16, 2009
2.4.5 Parameter Offset
M_ME_Na Parameter Offset : 2000 #M_ME_Na IOa offset for parameter data
M_ME_NB Parameter Offset : 2000 #M_ME_NB IOa offset for parameter data
M_ME_NC Parameter Offset : 2000 #M_ME_NC IOa offset for parameter data
This parameter specifies the IOa 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 MVI69-101S 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.
2.5 [M_SP_NA_1]
This section defines the monitored single-point database for the slave device
emulated. This information is sourced from the database and is transferred to the
remote master unit. Each point in the database occupies 1 bit. (1 = On, 0 = Off
state).
This section takes the following parameters:
Point #
DB address
Groups
IV DB Bit
Each point is one bit and the DB address value corresponds to the bit offset in
the database.
The Database address value should be located in a database area that is
constantly being moved from the CompactLogix or MicroLogix processor to the
MVI69-101S module. Therefore, this value should be configured in an area that
is used on a Backplane Command Function 1.
Refer to the Group Codes section for a listing of Group Codes.