NORD Drivesystems BU0020 - Manual (Page 98)

PROFIBUS DP – Supplementary manual options for NORD - Frequency Inverters
98 BU 0020 GB-2612
10.6 Keyword Index
Address Assigned or specified designation of a DP slave.
ASIC Integrated circuit specific to the application
Baud rate The transmission rate for serial interfaces in bits per second
Binary code The designation for a code in which messages are communicated by "0" and "1" signals.
Bit / Byte A bit (binary digit) is the smallest unit of information in the binary system. A byte consists
of 8 bits.
Broadcast In a network, all slave participants are addressed simultaneously by the master.
DPM1 DP masters Class 1 implement the reference data traffic to the DP slaves. The DPM1 is
the central automation device for PROFIBUS DP.
DPM2 In addition to reference data traffic, Class 2 DP masters enable further event-controlled
functions such as control, commissioning and planning tasks. The DPM2 is a planning
or configuration device for PROFIBUS DP.
DP Protocol for decentralised peripherals. With PROFIBUS DP this describes the
connection between the automation device and the bus participants and is a
standardised specification.
DP-V0 The central control unit (bus master)cyclically reads the incoming information (e.g.
actual values and status word) from the slaves and writes the output information (e.g.
control word and setpoints) to the slaves.
DP-V1 With the performance level DP-V1, acyclic data traffic can additionally be carried out
between the central control unit (bus master) and the connected slaves. Transfer of
acyclic data is carried out in parallel to the cyclic data traffic between the bus
participants.
GSD Device master data
Electronic data sheet for the device
ISO The International Standards Organisation is the international association of
standardisation organisations and produces international standards in all fields, with the
exception of electricity and electronics.
I&M I&M stands for "Identification & Maintenance Functions" and is a functionality of the
PNO for all PROFIBUS devices which support acyclic data traffic.
OSI layer model The Open Systems Interconnection Reference Model (OSI) defines the elements,
structures and tasks necessary for data communication and assigns these to the times
for the communication process in seven consecutive layers.
PROFIBUS DP PROFIBUS DP is a field bus variant for production automation. RS485 interfaces are
used for transfer. The DP communication protocol differs in its performance levels and
various application profiles.
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