Local Application Process Title is an identifier that is assigned by an address manager. It represents a specific application process.

Adress parameters of remote side (the IED device)

Maximum proposed transactions that could be sent and unacknowledged. The value can be reduced if the other party suggests lower value at negotiation.

Maximum proposed transactions that could be received without sending an acknowledge. The value is sent to the other party.

Timer, which permits the sending ICCP message Identify request to the communicating party to find out the validity of TCP/IP connection. To enable the timer a nonzero value must be specified. If the connection was aborted on TCP/IP level, the fast detection ensures its faster restoring.
This parameter is recommended in situations when transmitting data via large networks or when a small amount of data is transmitted via the active connection. The value 0 (implicit) turns off the HeartBeat timer. A positive value means the seconds to send Heartbeat message. If any message is sent, the Heartbeat timer is reset and Heartbeat message is sent only after timeout elapses without any communication between partners.

Delay inserted before repeated attempt to establish the connection after it has been broken. If the connection should be restored as fast as possible, set the low value or 0 seconds.

Maximum waiting time to receive TCP data. After this timeout elapses, the possible requirements (data) for sending to a communicating party are checked.
As the communication is executed via one thread, the high value can reduce speed of interaction with the party. The recommended value is 50 to 150 milliseconds.

The parameter activates creating TCP connections for each station. If the device supports multiple clients, communication can be parallelised.
If the parameter is set to NO, a single TCP connection will be created for all communication stations.

The way IEC 61850 flags are mapped into D2000 flags FA..FM.

IEC 61850 protocol has quality flags mapped into 13 bits of Quality attribute, details are given in the description of the parameter Quality Index:

Mapping can be:

• None - flags FA .. FM are not set
• Simple - Quality attribute directly maps to flags FA .. FM

Note: after the change of this parameter we recommend a restart of KOM process or communication partner so that all values come into the system with properly set flags.

Setting of Trigger prameters used to trigger reports (TrgOps). The following bits are used according to the standard (the numbering is from the highest bit, which is bit 0):

• bit 0 - reserved
• bit 1 - data-change
• bit 2 - quality-change
• bit 3 - data-update
• bit 4 - integrity
• bit 5 - general-interrogation

Parameter enables to specify additional names of objects to query during browsing for I/O tags. Names must be separated by a space, e.g. "Obj1 Obj2". This makes it possible to handle the situation when IED deliberately does not list some objects in the GetNameList-Response message (response to a requested list of objects within a logical device).
Note: The ABB Substation Management Unit COM600 required parameter setting to LLN0 - this object was not propagated but it was important (it contained e.g. buffered and unbuffered reports).

Type of authentication. These types of authentication are supported:

• None - no authentication
• Password - password-based authentication. The password is transmitted unencrypted within ISO 8650-1 OSI Association Control Service layer.

Password used if Authentication Type = Password

The Data Type will be queried by a GetVariableAccessAttributes-Request message after the conection establishment.

Note 1: information is currently stored only in KOM process memory, therefore after its restart and the first connection establishment the data type detection is performed for all Autodetect I/O tags.
Note 2: data types State and StateQ are undistinguishable by this mechanism, therefore objects of these types are detected as StateQ.
Note 3: the same mechanism for data type detection is used in browsing.

Structure or Array. Structure can contain simple types, arrays, and nested structures. Arrays consist of elements that can be simple types (here, however, it is more efficient to use some of the Array of types), structures and arrays. If a data type of an I/O tag is configured as a Structure, the Array Index parameter specifies the complex address of the structure element to be read in the I/O tag.
Note: multiple I/O tags can have the same Name parameter, the Structure data type, and differ only by the Array Index parameter to access the various elements of the structure. If these I/O tags are configured with the I / O Tag Type = Periodically polled value, a single reading request will be sent for all such points.