Festo Контроллеры двигателя SFC-LAC - Manual (Page 22)

Contents and general instructions
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Festo GDCP−SFC−LACI−DN−EN en 0812NH
Term / abbreviation Meaning
LSB Least significant byte (lower−value byte)
MAC ID Media AccessControl Identifier, see Slave address"
MSB Most significant byte (higher−value byte)
Object Data (attributes) are summarised in an object. These attributes describe
various properties of a DeviceNet device, and can be read and written via
the bus. Access see: Object Directory"
Object Directory The Object Directory contains all device parameters and current
processing data which are directly accessible via FHPP, field bus or CI.
The Object Directory is divided into a range which contains general
specifications on the device (device identification, manufacturer name
etc.) and communication parameters, as well as a range which describes
the specific device functions. The identification of an entry (object) of the
object directory takes place depending on access via:
FHPP−FPC:
Parameter number PNU
CI: Index and Subindex
DeviceNet: Class, Instance, Attribute
PNU Parameter number as per FHPP−FPC
Slave address
(nodeĂaddress) Each of the up to 64 stations in a DeviceNet network has its own MAC ID
(Media Access Control Identifier); component of the CAN identifier.
Terminating resistor Resistor for minimising signal reflections. Terminating resistors must be
installed or switched in at the end of bus segment cables.
Tab. 0/2: Index of terms and abbreviations for the field bus