Danfoss VLT DeviceNet MCA 104 Programming Manual page 22

Parameter Access
5.3.4 Class ID 05h Connection Object
Class ID 05h connection object is a standard DeviceNet object for allocation and managing I/O and explicit messaging
connections. For this class, 3 instances are supported:
•
Explicit messages.
•
Polled I/O.
•
Change of state.
The attributes supported for the different instances are listed in Table 5.7, Table 5.8, and Table 5.9.
5 5
Attribute
1
2
3
4
5
6
7
8
9
12
13
14
15
16
17
Table 5.7 Instance 1 Attributes: Explicit Message Instance
20
VLT
Access Name
Get State
Get Instance type
Get Transport class
trigger
Get Produced
connection ID
Get Consumed
connection ID
Get Initial
communication
characteristics
Get Produced
connection size
Get Consumed
connection size
Get/Set Expected
package rate
Get Watchdog
timeout action
Get Produced
connection path
length
Get Produced
connection path
Get Consumed
connection path
length
Get Consumed
connection path
Get Production
inhibit time
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DeviceNet MCA 104
Data type Description
USINT State of the object.
USINT Indicates either I/O or explicit message.
USINT Defines behavior of the connection.
UINT CAN identifier field when the connection transmits.
UINT CAN identifier field value that denotes message to be received.
USINT Defines the message group/groups across which productions and
consumptions associated with this connection occur.
UINT Maximum number of bytes transmitted across this connection.
UINT Maximum number of bytes received across this connection.
UINT Defines value used in transmission trigger timer and inactivity/
watchdog timer.
USINT Defines how to handle inactivity/watchdog timeout.
UINT Number of bytes in the produced connection path attribute.
Array of USINT Specifies the application object/objects whose data is to be produced
by these connection objects.
UINT Number of bytes in the consumed connection path attribute.
Array of USINT Specifies the application object/objects that are to receive the data
consumed by this connection object.
UINT Defines minimum time between new data production. This attribute is
required for I/O client connection.
MG92F102