User manual

IEC61131 User and Reference Manual
April 22, 2008
495
the data link and physical layer. Valid values are 1 to 6500 seconds. The default value is 15 seconds.
The Master must have the Select/Operate functionally in order to use this feature.
The Report only Level 2 Compliant Objects in Class Polls parameter affects how Short Float
Analog Input, Short Float Analog Output, and 32-bit Analog Output objects are reported. These
objects are converted to 32-bit Analog Input and 16-bit Analog Output objects when this parameter
is selected. Valid selections are:
 Yes
 No
The default selection is No.
The Limit Maximum Events in Read Response parameter allows limiting the number of events in
a read response. Select the checkbox to enable the limit. Valid values are 1 to 65535. The default
value is disabled.
Note: The Maximum Events parameter applies to responses from read commands only. It
does not affect unsolicited responses.
The Allow Duplicate Modbus Addresses checkbox determines if the Modbus I/O database
addresses assigned to the DNP data points must be unique. Check this box if you want to allow more
than one point to use the same Modbus address.
 Click the OK button to accept the configuration changes and close the DNP Settings dialog.
 Click the Cancel button to close the dialog without saving any changes.
Data Link Layer Configuration
The Data Link Layer property page is selected for editing by clicking Data Link Layer in the tree
control section of the DNP Settings window. When selected the Data Link Layer property page is
active.