User manual

IEC61131 User and Reference Manual
April 22, 2008
513
Dynamic Routing
In addition to the configured routing table, there is an internal dynamic routing entry. This entry is
not shown in the routing table. The dynamic routing entry listens to incoming messages and learns
the address of the remote station and the communication port used for communicating with it.
If there is no entry in the routing table, the RTU will use the dynamic routing entry to respond to a
message on the same communication port as the incoming message.
The dynamic routing entry is not cleared on initialization. This is deliberate, and is important for
controllers that need to be remotely reconfigured. In this case the host can initialize the controller
without losing the communications link.
Note: Dynamic routing should not be used in a master station. Configure all slave stations
in the routing table.
Binary Inputs Configuration
The Binary Inputs property page is selected for editing by clicking Binary Inputs in the tree control
section of the DNP Settings window. When selected the Binary Inputs property page is active.
Binary Inputs parameters are set in this property page. Each parameter is described in the following
paragraphs.
The Number of Points displays number of binary inputs reported by this RTU. This value will
increment with the addition of each configured Binary Input point. The maximum number of points
is 9999. The maximum number of actual points will depend on the memory available in the
controller.
The Starting Address parameter specifies the starting DNP address of the first Binary Input point.