Watlow Series D8 - Manual (Page 84)

Chapter 3: Communicating by DeviceNet Series D8 User’s Guide
66 Watlow Anafaze Doc. 0600-3120-2000
Figure 3.15 D88 Consumed Static Output
Connection Object
The Connection Object allocates and manages the internal re-
sources associated with both polled I/O and explicit messag-
ing connections. The specific instance generated by the
Connection Class is referred to as a Connection Instance or a
Connection Object.
Table 3.16 Connection Class and Services
Table 3.17 Connection Instance Attributes
Byte Byte Byte Byte Byte Byte Byte Byte
Loop 1 Set Point
INT (2 bytes)
Loop 2 Set Point
INT (2 bytes)
Loop 3 Set Point
INT (2 bytes)
Loop 4 Set Point
INT (2 bytes)
Loop 5 Set Point
INT (2 bytes)
Loop 6 Set Point
INT (2 bytes)
Loop 7 Set Point
INT (2 bytes)
Loop 8 Set Point
INT (2 bytes)
Loop 1 Control
Mode
USINT (1 byte)
Loop 2 Control
Mode
USINT (1 byte)
Loop 3 Control
Mode
USINT (1 byte)
Loop 4 Control
Mode
USINT (1 byte)
Loop 5 Control
Mode
USINT (1 byte)
Loop 6 Control
Mode
USINT (1 byte)
Loop 7 Control
Mode
USINT (1 byte)
Loop 8 Control
Mode
USINT (1 byte)
Class Code
05 hex
Class Services
None
Instance Services
0E hex Get Attribute Single
10 hex Set Attribute Single
Attribute Access Name Type Description
1 (1 hex) Get State USINT State of the object
2 (2 hex) Get Instance Type USINT Indicates either I/O or Messaging
3 (3 hex) Get
Transport Class
Trigger
BYTE Defines behavior of the Connection
4 (4 hex) Get
Produced
Connection ID UINT
Placed in CAN Identifier Field when the Con-
nection transmits
5 (5 hex) Get
Consumed
Connection ID UINT
CAN Identifier Field value that denotes mes-
sage to be received
6 (6 hex) Get
Initial Comm
Characteristics BYTE
Defines the Message Group(s) across which
productions and consumption associated with
this Connection when it occurs
7 (7 hex) Get
Produced Con-
nection Size
UINT
Maximum number of bytes transmitted across
this Connection
8 (8 hex) Get
Consumed
Connection
Size
UINT
Maximum number of bytes received across
this Connection
9 (9 hex) Get/Set
Expected
Packet Rate
UINT
Defines timing associated with this Connec-
tion