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Connection Object ( Class : 0x05 ) - ICP DAS USA I-7242D User Manual

Devicenet / modbus rtu gateway.
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4.8

Connection Object ( Class : 0x05 )

This section presents the externally visible characteristics of the
connection objects associated with the Predefined Master/Slave Connection
Set within slave devices. With the I-7242D, the "Connection" object has up to
four instances (Instance ID 0x01 to 0x04). Each of these instances represents
one of the two ends of a virtual connection established between two nodes on
the DeviceNet network. Each instance of this object belongs to one of the two
following types of connection: Explicit connection, allowing Explicit Messages
to be sent, or I/O Connections. This object is described in chapter 5-4 of
volume I of the DeviceNet specifications.
Here is a brief description of the four instances of the I-7242D's
"Connection" object, and then details are given in the rest of this chapter:
Instance ID
Type of connection
0x01
Explicit Messaging Explicit Connection
0x02
I/O Connection
0x03
I/O Connection
0x04
I/O Connection
Class Attribute
Attribute ID
0x01
Class Service
Service Code
0x0E
Instance (0x01) Attribute: Explicit Connection
Attribute ID
0x01
0x02
0x03
Transport class trigger
0x04
Produced connection id
0x05
Consumed connection id
0x06
Initial comm. characteristics
0x07
Produced connection size
0x08
Consumed connection size
I-7242D DeviceNet/Modbus RTU Gateway User's Manual, July 2006, Version 1.1
Polled Command/Response Connection
Bit-Strobed Command/Response Connection
Change-of-State / Cyclic (Acknowledged) Connection
Attribute Name
Revision
Get_Attribute_Single
Attribute Name
State
Instance type
Connection name
Data Type
UINT
Service Name
Data Type
USINT
USINT
BYTE
UINT
UINT
BYTE
UINT
UINT
I-7242D user manual
Method
Value
Get
1
Need
Required
Method
Value
Get
0x00 to 0x05
Get
0x00
Get/Set
0x83
Get/Set
Table 3-2
Get/Set
Table 3-2
Get/Set
0x21
Get/Set
0x84
Get/Set
0x84
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