202 Rockwell Automation Publication 1766-UM001O-EN-P - September 2021
Appendix F MicroLogix 1400 Distributed Network Protocol
Note that parameters Number of Class3 Events and Hold Time after Class3
Events (x1 s) are used together so that if either one of the criteria are met, an
Unsolicited Response is transmitted.
By default, the Hold time is re-triggered for each new event detected.
You can choose not to re-trigger the hold timer for each new event detected by
setting Status Bit S:36/12 to 1 before downloading to the controller. The default
state of this Status Bit S:36/12 is 0.
Select Timeout (x1 s)
The valid range is 1…65535. Default value is 10.
This parameter is used for controlling CROB (Control Relay Output Block) and
AOB (Analog Output Block). After receiving the request with the function code
FC_SELECT(3), DNP3 Master should send the request with the function code
FC_OPERATE(4) within this configured time.
DNP3 Object Data File Number
The DNP3 Object Data File Numbers define the mapping of the listed DNP3
objects to controller data table files. The number of elements defined for each
of those data table files also defines the number of corresponding DNP3
objects.
See DNP3 Objects and Controller Data Files
on page 213 for more details.
DNP3 Object Config File Number
The DNP3 Object Config File Numbers define the mapping of the listed DNP3
object properties (class number, online/offline status, object quality flags,
deadbands, and/or thresholds) to controller data table files.
See DNP3 Objects and Controller Data Files
on page 213 for more details.
DNP3 Secure Authentication
This section is applicable only to MicroLogix 1400 Series B and Series C
controllers.
The controller implements the DNP3 Secure Authentication based on the
DNP3 Specification, Supplement to Volume 2, Secure Authentication,
Version 2.00.
DNP3 Secure Authentication has been implemented in the DNP3 Application
Layer of the controller system. If you configure any parameters regarding
DNP3 Secure Authentication in the DNP3 Slave Application Layer
configuration, it affects all ports which are configured for DNP3 protocol in
the controller.
Enable Secure Authentication
This parameter is supported only in MicroLogix 1400 Series B and Series C
controllers.
The valid selections are Enabled (Checked) and Disabled (Unchecked). Default
value is Disabled (Unchecked).
When the selection is Disabled (Unchecked), the controller disables DNP3
Secure Authentication subsystem.
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