Schneider Electric LUFP9 user manual Attributes of class 16#05, Services in class 16#05

10. Appendix D: DeviceNet Objects

The “Change-of-State / Cyclic Connection” connection (Instance ID 16#04) allows the gateway to produce its data only when their values change or when a timer called “heartbeat rate” times out. A minimum time limit is intended to prevent the connection from monopolizing the DeviceNet network’s bandwidth, should the values of the data it produces change too often. Going into “Cyclic” mode allows the number of exchanges made via this connection to be reduced if the update time (sampling) for the data produced is slow. By adjusting the connection’s cycle time to the value of this time, the produced data corresponds exactly to the data samples, without losing or repeating any sample.

Attributes of class 16#05

ID	Access	Name	Need	Type	Value	Description
16#01	Get	Revision	Optional	UINT	1	Revision index of the “Connection Object” class.
16#64	Get / Set	Polled production	Optional	USINT	0	Index of the input area used				by the gateway	for
						production	on	its	“Polled	Command/Response”
						connection. (1)
16#65	Get / Set	Polled consumption	Optional	USINT	0	Index of the output area used				by the gateway	for
						consumption	on	its	“Polled	Command/Response”
						connection. (1)
16#66	Get / Set	Strobed production	Optional	USINT	0	Index of the input area used				by the gateway	for
						production on its “Bit Strobed				Command/Response”
						connection. (1)
16#67	Get / Set	Strobed consumption	Optional	USINT	0	Index of the output area used				by the gateway	for
						consumption on its “Bit Strobed				Command/Response”
						connection. (1)
16#68	Get / Set	COS production	Optional	USINT	0	Index of the input area used				by the gateway	for
						production on its “Bit Strobed				Command/Response”
						connection. (1)

(1)All these 5 attributes relate to the first 5 parameters referenced by the EDS file supplied with the gateway. Write access to them (Access = Set) is reserved for DeviceNet configuration tools. You should not use the “Set_Attribute_Single” service with these attributes. An area’s index is necessarily equal to 0 and corresponds to the “Input1” area of the gateway, that is to say to its only one input data area.

Services in class 16#05

Service code	Name of the service	Need	Description
16#0E	Get_Attribute_Single	Required	This service allows to read the value of one of the class
			attributes.

Attributes of instance 16#01 of class 16#05: Explicit Connection

ID	Access	Name	Need	Type	Value
16#01	Get	State	Required	USINT	0 to 5

This attribute represents the status of the “Explicit Connection” object. The LUFP9 gateway supports the following values: 0 (non-existent), 1 (in the process of being configured), 3 (connection established), 4 (timed out) and 5 (deferred deletion). Please see figures 5.16 and 7.4 in volume I of the DeviceNet specifications for further information on this subject.

16#02

Get Instance type Required USINT 0

This attribute defines the instance’s connection type: Messaging connection (0) or I/O connection (1).

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