Burkert Type 8640 - Manual (Page 92)

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Configurationandparameter
settingsforEtherNet/IP
Instance:
A specific characteristic of an object is described as an instance. The designations “Object”, “Instance” and
“Object instance” all refer to a specific instance.
If a class has different instances, services, behavior and attributes are the same. However, they may have different
variable values.
Example: An instance of the object class “Vehicle” is for example car.
Attributes:
Attributes help describe the functions of an object.
Example: For a valve output, attributes can be used to define the value, the behavior in the event of a fault and a
safety position.
Service:
Service designates a function which is supported by an object. A group of common services is defined as CIP.
Services are for example the reading and writing of values.
Class overview:
The CIP classes are listed in the ODVA's CIP Specification (volume 1, "Common Industrial Protocol"). This spec-
ifies their attributes, regardless of the physical interface (e.g. Ethernet, CAN).
The physical interface is described in another specification ("EtherNet/IP Adaption of CIP"). It describes the
adaption of EtherNet/IP to CIP.
Overview of CIP common classes
Class Name
01 hex Identity
02 hex Message Router
04 hex Assembly
05 hex Connection
06 hex Connection Manager
F4 hex Port Class Object
F5 hex TCP/IP Interface Object
F6 hex Ethernet Link Object
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Type 8640