Rockwell Automation 1766-Lxxxx MicroLogix 1400 Programmable Controllers User Manual - Manual (Page 257)

Rockwell Automation Publication 1766-UM001H-EN-P - May 2014 217
MicroLogix 1400 Distributed Network Protocol (DNP3) Appendix F
The value of 0 indicates that responses are not delayed due to this parameter.
Note that parameters Number of Class2 Events and Hold Time after Class2
Events (x1 s) are used together so that if either one of the criteria are met, an
Unsolicited Response is transmitted.
Number of Class3 Events
If the MicroLogix 1400 is configured not to initiate Unsolicited Response, this
parameter used to limit the maximum number of events which is generated and
logged into the event buffer for Class 3 events. In this case, value 0 will disable to
generate the event.
If the MicroLogix 1400 is configured to generate Unsolicited Response, and the
number of queued Class 3 events is reached to this value, Unsolicited Response is
initiated.
The valid range is 0 to 6013. Default value is 10.
Hold Time after Class3 Events (x1 s)
This parameter is only for Unsolicited Response. The MicroLogix 1400 holds the
events during Hold Time after Class3 Events (x1 s) before initiating an
Unsolicited Response.
The valid range is 0 to 65535. Default value is 5.
The value of 0 indicates that responses are not delayed due to this parameter.
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.
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 MicroLogix 1400 data table files. The number of elements defined for
each of those data table files also defines the number of corresponding DNP3
objects.