Eaton PowerXL DX-NET-DEVICENET, Manual

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