SEW DFD11B, Руководство пользователя

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Manual – DFD11B DeviceNet Fieldbus Interface
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Definitions of terminology
DeviceNet Characteristics
6.4 Definitions of terminology
Term Description
Allocate Provides a service for setting up a connection.
Attributes Attribute of an object class or instance. Describes the characteristics of the
object class or instance in more detail.
BIO – Bit-Strobe I/O All stations can be addressed with a broadcast telegram. The addressed sta-
tions respond with the process input data.
Class DeviceNet object class
Device-Net scanner Plug-in module for the Allen Bradley PLC which connects the PLC fieldbus to
the peripheral devices.
DUP-MAC check Duplicate MAC-ID test
Explicit message body Includes the class no., instance no., attribute no. and the data.
Explicit message Parameter data message; assists in addressing the DeviceNet objects.
Get_Attribute_Single Read service for a parameter.
Instance Instance of an object class. Divides the object classes into additional sub-
groups.
MAC-ID Media Access Control Identifier: node address of the device.
M-File Provides the data range between the PLC and the scanner module.
Mod/Net Module/Network
Node ID Node address = MAC-ID
PIO – Polled I/O Process data channel of DeviceNet; allows process output data to be sent and
process input data to be received.
Release Provides a service for setting up a connection.
Reset Provides a service for resetting an error.
Rung SLC500 program line
Service Service performed via bus, e.g. read service, write service, etc.
Set_Attribute_Single Write service for a parameter.
SLC500 Allen Bradley PLC
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