Eaton PowerXL DX-NET-DEVICENET Manual page 41

COS/Cyclic I/O Connection
COS (change of state) connections are used to establish event-controlled
connections. In other words, when using a connection of this type, the
DeviceNet devices will automatically generate messages as soon as there is
a change of state. Meanwhile, in cyclic I/O connections, messages will be
triggered at a specific interval based on a timer.
Table 10: Instance 4: COS/Cyclic I/O connection
Attribute Attribute name
Id
1 State
2 Instance Type
3 Transport Class Trigger
4 Produced Connection ID
5 Consumed Connection ID
6 Initial Communication
Characteristics
7 Produced Connection Size
8 Consumed Connection Size
9 Expected Packet Rate
12 Watchdog Timeout Action
13 Produced Connection Path
Length
14 Produced Connection Path
15 Consumed Connection
Path Length
DX-NET-DEVICENET 02/14 MN04012005ZEN www.eaton.com
Access Data type
right
ro | rw
ro USINT
ro USINT
ro Byte
ro UINT
ro UINT
ro Byte
ro UINT
ro UINT
ro/rw UINT
ro/rw USINT
ro UINT
ro EPATH
ro UINT
4 Commissioning
4.6 Supported objects
Description
Connection status.
0: Non existent
1: Configuring
2: Waiting for connection ID
3: Established
4: Time out
5: Deferred
0001 (I/O Connection)
hex
Type of connection:
00 client, cyclic, class 0 (no
hex
acknowledge)
10 Client, COS, Class 0 (No
hex
Acknowledge)
02 Client, Cyclic, Class 2
(Acknowledge)
12 Client, COS, Class 2
hex
(Acknowledge)
CAN ID
FFFF Not acknowledged
hex
Other CAN ID for reception
(Acknowledge)
0F is produced using
hex
message group 1 (no
acknowledge)
01 is produced using
hex
message group 1
Consumed using message
group 2 (acknowledge)
The maximum number of bytes
that will be sent (8 bytes)
0008
hex
–
0000
hex
(transition to the timed out
state)
0007
hex
20 04 25 nn nn 30 03
hex
0000 (No Acknowledge)
hex
0005 (Acknowledge)
hex
37