Service codes are used to define the action that is requested to take place when an object or parts
of an object are addressed through explicit messages using the addressing scheme described in
Section 2.1. Apart from simple read and write functions, a set of CIP services has been defined.
These CIP services are common in nature, meaning they may be used in all CIP Networks
and they are useful for a variety of objects. Furthermore, there are object-specific service codes
that may have a different meaning for the same code, depending on the class of object. Finally,
defining vendor-specific services according to the requirements of the product developer is
possible. While this provides a lot of flexibility, the disadvantage of vendor-specific services is that
they may not be understood universally. Minimally, vendors provide a description of the public
information that their customers will need access to in their literature.
Service codes are used to define the action that is requested to take place when an object or parts of an object are addressed through explicit messages using the addressing scheme described inSection 2.1. Apart from simple read and write functions, a set of CIP services has been defined.These CIP services are common in nature, meaning they may be used in all CIP Networksand they are useful for a variety of objects. Furthermore, there are object-specific service codesthat may have a different meaning for the same code, depending on the class of object. Finally,defining vendor-specific services according to the requirements of the product developer ispossible. While this provides a lot of flexibility, the disadvantage of vendor-specific services is thatthey may not be understood universally. Minimally, vendors provide a description of the publicinformation that their customers will need access to in their literature.
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