Watlow Series SD6 PID Controller with DeviceNet Addendum - Manual (Page 9)

Wa t l o w S e r i e s S D 6 P I D w i t h D e v i c e N e t ■ 9 ■
Table 17. Connection Object Class Attributes
Attribute # Access
Rule Name DeviceNet Data
Type Description of
Attribute Semantics of Values
Explicit Connection
The Explicit Connection Object defines the configuration for the Explicit connection to the device. The Explicit Connection
object is an instance of the Connection Object defined in the DeviceNet Specification. All devices that are compliant with
the DeviceNet Specification must support at least one instance of the Connection object with a connection type of Explicit.
I/O Connection
I/O Connection objects define the configuration for the I/O connections to the device. Each I/O Connection object is an
instance of the Connection object defined in the DeviceNet Specification. All devices must be Group 2 devices and must sup-
port, as a minimum, the I/O Poll connection in the Master/Slave connection set.
Watchdog Timeout Action Attribute defines the action performed by the I/O Connection object in the event the
Inactivity/watchdog Timer for the connection expires. For the I/O Connection object, Auto Reset shall be an invalid value
for the Watchdog Timeout Action attribute. (ref. SIG Specification sec. 4.1.5.1.1)
Produced Connection Path Attribute defines the Application object class, instance, and attribute that produces data
over the I/O connection. For all I/O connections, the Produced Connection Path shall be a Logical Segment, as defined in
the DeviceNet Specification, and shall point to the Data Attribute of an Assembly object. The behavior of the device shall
be such that, if the Produced Connection Path attribute is modified, the Produced Connection Size Attribute shall be
modified internally to accurately reflect the size of the assembly produce by the I/O connection. For all I/O connection
objects in the Master/Slave Connection Set, if the Produced Connection Path attribute is modified, the new attribute value
shall be saved in Non-Volatile (NV) memory and shall be the default value when the connection is allocated. (ref. SIG
Specification sec. 4.1.5.1.2).
Produced Connection Size Attribute specifies the maximum number of data bytes produced over the I/O connection.
The Produced Connection Size attribute shall have Get Only access for all I/O connection objects. The Produced Connection
Size attribute shall accurately reflect the size of the assembly produced over the I/O connection. (ref. SIG Specification sec.
4.1.5.1.3).
Consumed Connection Path Attribute defines the Application object class, instance, and, optionally, attribute that con-
sumes data received over the I/O connection. For all I/O connections over which the device is the Server (as specified by the
Direction field of the Transport Class Trigger attribute), then special requirements as defined in the Semi SIG specification
shall be followed. (ref. SIG Specification sec. 4.1.5.1.4)
Consumed Connection Size Attribute specifies the maximum number of data bytes consumed by the I/O connection
objects. The Consumed Connection Size attribute shall accurately reflect the size of the assembly consumed by the I/O con-
nection, as specified by the Consumed Connection Path attribute of the Data With ACK Path List attribute of the
Acknowledge Handler object. (ref. SIG Specification sec. 4.1.5.1.5)
Refer to the Semi SIG specification (Sec. 4.1.4/5) for Semi requirements.
Refer to the DeviceNet Specification (Vol. II, Sec. 6-3) for complete requirements.
Table 16. Connection Object Revision History
Revision Description
01 Initial Release