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PROFIBUS DP – DP stands for Decentralized Peripheral and was designed for remote input
output devices. This forms the core protocol of PROFIBUS. If PROFIBUS were a book, it would
be called PROFIBUS DP.
PROFidrive – A chapter in the PROFIBUS book or PROFINET book that adds functions to the
core protocol for high speed drive applications.
PROFIsafe – A chapter in the PROFIBUS book or PROFINET book that adds functions to the
core protocol for safety applications.
PROFIBUS PA – A chapter in the PROFIBUS book or PROFINET book that adds functions to
the core protocol for process control applications. PA refers to Process Automation.
PROFINET – A second book by the same authors as PROFIBUS. PROFINET is an Ethernet
based protocol that makes use of many sections of the PROFIBUS protocol and make optimal
use of Ethernet.
Profile – A profile is a standardization of a field device from the bus point of view. It defines the
output and the core device parameters.
Protocol – Refers to a set of rules. In industrial communications, it simply refers to a set of
rules defining how something is done. For example, how to get information from point A to
point B. Since one set of rules can be made up of many different sets of rules, one protocol
can be made up of different sub-protocols.
Proxy – A type of gateway defined in PROFINET which, aside from joining two networks
together, also defines how the date is set as well. Think of it as a very easy-to-use gateway.
Slave – A type of device on PROFIBUS that will only talk on the network after a Master device
has requested information.
Switch – A device that directs the traffic on an Ethernet network. It reads the incoming packet
and directs it to the correct port where the target device is located.
TCO – Total Cost of Ownership is a financial term used in asset management referring to all
the costs associated with ownership. In process automation, it is the sum of the cost of the
device plus the cost of commissioning plus the cost of maintaining the device.
Token Ring – A type of protocol using a virtual token that is passed from master to master.
The master can only talk on the bus when it has the token. When it is has finished talking on
the bus, the master passes the token onto another master.
FCT030 Modbus (From firmware 4.0)
Function Manual, 06/2018, A5E39931813-AB
Definitions
A.1 Definitions
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