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WCAIM2012 Supplement 1 – ACCESS I and M DeviceNet Specification 3

(4) Bus Off Counter will be forced to 0 whenever set regardless of the

data value provided.

(5) Allocation_byte

bit 0 explicit – set to 1 to allocate

bit 1 polled – set to 1 to allocate

bit 2-3 reserved (always 0)

bit 4 change of state – set to 1 to allocate

bit 5 cyclic – set to 1 to allocate

bit 6 unacknowledged COS/Cyclic

bit 7 reserved (always 0)

Assembly Object

Class Code: 04 (0x04)

The Assembly Objects bind attributes of multiple objects to allow data

to or from each object to be sent or received over a single connection.

Assembly Object Class Attributes

Attribute Access Name Type Value

1 Get Revision UINT 1

2 Get Max Class ID UINT (1)

Assembly Object, Instance (1) Attributes (Produced Data)

Attribute Access Name Type Value

3 Get Data ARRAY of (2)

BYTE

ULONG

USINT

Assembly Object, Instance (1) Attributes (Consumed Data)

Attribute Access Name Type Value

3 Get/Set Data BYTE (3)

Common Services

Service Code Class Instance Service Name

14 (0x0E) Yes Yes Get_Attribute_Single

16 (0x10) No Yes Set_Attribute_Single

(1) Max Class ID:

Assembly Input Object 101 or TBD

Assembly Output Object 102 or TBD

Max Class ID is the max value of Assembly Input Object and

Assembly Output Object.

(2) Produced Data:

bit 0 = Sensor1 (DIP instance 1 state)

bit 1 = Sensor2 (DIP instance 2 state)

bit 2 = Sensor3 (DIP instance 3 state)

bit 3 = LB/SC Selenoid1 (DOP instance 1 status)

bit 4 = LB/SC Selenoid2 (DOP instance 2 status)

bit 5 = Not Used

bit 6 = Not Used

bit 7 = Not Used

bytes 2-5 = Maintenance counter

bytes 6-9 = Cumulative counter

bytes 10 = Cycle timer "open": in sec

bytes 11 = Cycle timer "close": in sec

(3) Consumed Data:

bit 0 = Not used

bit 1 = Not used

bit 2 = Not used

bit 3 = Not used

bit 4 = Not used

bit 5 = Solenoid 1 (DOP instance 1 state)

bit 6 = Solenoid 2 (DOP instance 2 state)

bit 7 = Reset Counter (UDO instance 1 reset

counter)

Connection Object

Class Code: 05 (0x05)

The Connection Objects manage the characteristics of each

communication connection. As a Group II Only Slave device the unit

supports one explicit message connection, a POLL message

connection.

Connection Object Class Attributes

Attribute Access Name Type Value

1 Get Revision UINT 1

Connection Object, Instance 1 Attributes (Explicit Message)

Attribute Access Name Type Value

1 Get State USINT (1)

2 Get Instance Type USINT 0 = Explicit

Message

3 Get Transport Class Trigger USINT 0x83

4 Get Prod. Conn. ID UINT (2)

5 Get Cons. Conn. ID UINT (2)

6 Get Initial Comm. Char. USINT 0x21

7 Get Prod. Conn. Size UINT 128

8 Get Cons. Conn. Size UINT 133

9 Get Expected Packet Rate UINT default

2500msec

12 Get Watchdog Timeout Act. USINT 1= autodel

13 Get Prod. Conn. Path Length USINT 0

14 Get Prod. Conn. Path USINT (null)

15 Get Cons. Conn. Path Length USINT 0

16 Get Cons. Conn. Path USINT (null)

Flow Control

Worcester Controls

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