Class Code 005 (0X05): Connection Object - ABB DNP31.0 Technical Description

Class Code 005 (0x05): Connection Object

The Connection Class allocates and manages the internal resources associated with both I/O and Explicit
Messaging connections. The specific instance generated by the Connection Class is referred to as a Con-
nection Instance or a Connection Object.
Three instances of the Connection Class will be supported. Instance 1 will be the Explicit Message Con-
nection, instance 2 will be the Polled I/O Connection, and instance 4 will be the COS/Cyclic IO Connec-
tion.
Class Attributes
None
Instance Attributes
Connection Object, Instance 1 = Explicit Message Connection, Attributes
Attribute Access Name
1 Get State
2 Get Instance Type
3 Get Transport Class Trigger
4 Get Produced Connection ID
5 Get Consumed Connection ID
6 Get Initial Comm. Characteristics
7 Get Produced Connection Size
8 Get Consumed Connection Size
9 Get/Set Expected Packet Rate
12 (0x0C) Get/Set Watchdog Timeout Action
13 (0x0D) Get Produced Conn. Path Length
14 (0x0E) Get Produced Connection Path
15 (0x0F) Get Consumed Conn. Path Length
16 (0x10) Get Consumed Connection Path
17 (0x11) Get Production Inhibit Time
*1) Connection state
0 nonexistent
1 configuring
2 wait for connection ID
3 established
4 timed out
5 deferred
*2) xxxxxx = node address
*3) The size of Produced and Consumed Connection depends on the device connected to the DNP31 (as
of writing UMC100.3). For detailed information, please refer to the device manual.
DNP31.0 Data sheet
Type Value
USINT *1)
USINT 0 = Explicit Message
BYTE 0x83 - Server,
Transport Class 3
UINT 10xxxxxx011
UINT 10xxxxxx100
BYTE 0x21
UINT *3)
UINT *3)
UINT in ms
USINT 01 = auto delete
UINT 0
EPATH Empty
UINT 0
EPATH Empty
UINT 0
- 16 -
*2)
*2)
Issue: 09.2015