Glossary
D300529 0115 - BL67 I/O modules16-2
Bus line
Smallest unit connected to a bus, consisting of a PLC, a coupling element for modules on the bus and a module.
Bus system
All units which communicate with one another via a bus.
Capacitive coupling
Electrical capacitive couplings occur between cables with different potentials. Typical sources of interference are,
e. g. parallel-routed signal cables, contactors and electrostatic discharges.
Coding elements
Two-piece element for the unambiguous assignment of electronic and base modules.
Configuration
Systematic arrangement of the I/O modules of a station.
Control interface
The control interface is the interface from the BL67's internal module bus to the counter module. The commands
and signals directed to the counter module are converted by the BL67 gateway from the respective type of
communication applicable to the fieldbus in to the module-specific bits and bytes.
COS
Change of State Connections are event controlled connections. This means the DeviceNet devices generate
messages as soon as a change of state takes place.
CPU
Central Processing Unit. Central unit for electronic data processing, the processing core of the PC.
Cyclic
Messages are triggered time-controlled in Cyclic I/O connections by means of a time generator.
Digital
A value (e. g. a voltage) which can adopt only certain statuses within a finite set, mostly defined as 0 and 1.
DIN
German acronym for German Industrial Standard.
EDS
Electronic Device Data Sheet which contains standardized DeviceNet station descriptions. They simplify the
planning of the DeviceNet nodes.
EIA
Electronic Industries Association – association of electrical companies in the United States.
Electrical components
All objects that produce, convert, transmit, distribute or utilize electrical power (e. g. conductors, cable, machines,
control devices).
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