7BChapter Four: Operation 68BGeneral Information
45
Chapter Four: Operation
General Information
Note
Use this manual with the ODVA “DeviceNet Specification,” Volume I and
Volume II [1, 2]; and the SEMI Standards Common and Specific Device Models
[3, 4, 5] to obtain a complete functional description of your device. Refer to Table
6, page 20, for a list of the documents referenced throughout this manual.
This chapter defines the application-specific objects included in your transducer as well as the
mapping of the system requirements to specific objects and attributes in the DeviceNet protocol.
Tables defining the attributes and supported services for each Object Model are provided
throughout the text.
A summary of the attributes is listed in Table 51, page 95.
A sum
ma
ry of the supported services is listed in Table 52, page 103.
The objects, attributes, and services described in this m
anual com
ply with the definition of an
interoperable device on a semiconductor equipment sensor/actuator network proposed by SEMI
[3, 4, 5].
Operating Modes
The DMA transducer has two user-accessible operating m
odes:
• User Mode—norma
l, default power up mode.
• Calibration Mode—used to access certain calibration and operating parameters.
The operation of the transducer is the same in each mode; however, access to certain attributes
over the network may be restricted, depending on the active mode. Access rights to the specific
attributes are defined in the various object attribute tables throughout this manual.
DeviceNet Messaging Protocol
Your DMA transducer supports explicit and I/O poll messaging connections as defined in the
Predefined Master/Slave Connection Set [1] for establishing connections between devices. This
communication protocol determines the format of how messages are transmitted and received
over the DeviceNet network.
A brief description of the messaging protocol is provided in this chapter. Actual examples
designed to illustrate how DeviceNet messages are generated and interpreted are shown in
Appendix D: Example Messages, page 111.
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