Flowserve MX/QX Profibus DP/PA Field Unit - Manual (Page 85)

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PB DPV1 / PA Field Unit Installation and Maintenance FCD LMENIM2336-03 – 12/12
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Glossary
Term Description
Communications Protocol A standard for transferring data between intelligent devices, such as a
Master Station, Distributed Control System, Programmable Logic Controller, or a computer.
DCS Distributed Control System: geographically distributed intelligent control devices communi-
cating over a digital network (bus).
DP Decentralized Periphery: a PROFIBUS protocol used for high-speed transmission of user data;
commonly used between a host station and distributed input/output devices at the field level.
Electronic Device Descriptions (EDD) A device-specific configuration file that provides a descrip-
tion of the configuration parameters in the MX/QX to the host engineering tool.
EIA Electronic Industries Association: an organized body of manufacturers that sets interface
standards for the electrical and electronic industry. See RS-232C and RS-485.
Function Blocks A standard graphical representation of the control and measurement tasks that
take place in the field devices, used for easy system configuration.
GSD File A device-specific configuration file that is used by the PROFIBUS Master to configure and
communicate with the PROFIBUS device.
Host A computer, DCS, PLC or other microprocessor-based system that is in command of opera-
tions of the devices on its network.
Master An active host device that controls all communication to/from the MX/QX PB device.
MX Flowserve Limitorque abbreviation for Multi-turn Electronic Actuator.
MX/QX PB The intelligent PROFIBUS board residing in the Flowserve Limitorque actuator that
communicates with the master host station and controls the actuator. There is a separate board for
PROFIBUS DP and PROFIBUS PA
PA Process Automation: a PROFIBUS protocol based on PROFIBUS DP used for high-speed
transmission of user data, but with transmission techniques that ensures intrinsic safety and powers
the field devices over the bus.
PB Flowserve Limitorque abbreviation for PROFIBUS.
Parallel Data Transmission The transmission of digital data bits in parallel over serial wire.
Compare to serial data transmission.
PLC Programmable Logic Controller: an intelligent microprocessor-based replacement for relay
logic systems; used for a broad range of process and machinery control industrial applications.
Physical Block A software block that describes the necessary parameters and functions of the
device hardware itself.
Polling When a PROFIBUS master possesses the token, it then services its set of slaves. The slaves
are given permission to respond (access the network) when polled by the master.
Process Device Configuration Tool A software configuration tool used to parameterize the
extended parameter set of Process Devices.
PROFIBUS (PROcess FIeldBUS) An open standard for process and fieldbus systems. PROFIBUS
defines the functional, electrical and mechanical characteristics of a bit-serial fieldbus system.