Connection Object (Class Code 05H) - GE 469 Communications Manual

DEVICENET PROTOCOL
Attribute
01h
Table 20: Connection object, Class code 05h, Instance 01h (explicit message connection), Attributes:
Attribute
01h
02h
03h
04h
05h
06h
07h
08h
09h
0Ch
0Dh
128
The attributes in this class can be accessed using Change-Of-State Connection or
Explicit Messages Connection. This data could be polled from Class A0h, I/O Data
Input Mapping Object instance 1, attribute 3 as well.
The Modbus memory map should be consulted for more details on the output mes-
sages.

Connection Object (class code 05h)

The class and instance attributes for the connection object (class 05h) are as follows:
Table 19: Connection object, Class code 05h, Attributes:
Name/Description
Revision of the DeviceNet object
Name/Description
State of the object.
0 = Nonexistent; 1 = Configuring; 3 =
Established; 4=Timed Out;
5 = Deferred delete
Instance type. Indicates either IO or
messaging connection.
Transport class trigger. Defines
behavior of the connection.
Produced Cxnx ID. Placed in CAN
identifier field when the connection
transmits.
Consumed Cxnx ID. CAN identifier field
value that denotes message to be
received.
Initial comm characteristics. Defines
the message group(s) across which
productions and consumptions
associated with this object occur.
Produced connection size. Maximum
number of bytes transmitted across
this connection.
Consumed connection size. Maximum
number of bytes received across this
connection
Expected packet rate. Defines timing
associated with this connection.
Resolution is 10 ms.
Watchdog timeout action. Defines how
to handle inactivity/watchdog time-
outs.
0 = Transition to time out
1 = Auto delete; 2 = Auto reset
3 = Deferred delete
Produced connection path length:
Number of bytes in the produced
connection_path_length attribute
Services Default, Min, Max
Get_Attribute_All 2, 2, 2
Services Default, Min, Max
Get_Attribute_Single 1, 0, 5
Get_Attribute_Single 0, 0, 0
Get_Attribute_Single 83h, 83h, 83h
Get_Attribute_Single N/A, N/A, N/A
Get_Attribute_Single N/A, N/A, N/A
Get_Attribute_Single N/A, N/A, N/A
Get_Attribute_Single 512, 512, 512
Get_Attribute_Single 512, 512, 512
Get_Attribute_Single N/A, N/A, N/A
Get_Attribute_Single N/A, N/A, N/A
Get_Attribute_Single 0, 0, 0
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Data type
UINT
Data type
USINT
USINT
USINT
UINT
UINT
USINT
UINT
UINT
UINT
USINT
UINT