Rockwell Automation RECOMM-PBUS PROFIBUS Communications Module - Manual (Page 113)

Glossary Glossary-1
G
LOSSARY
communications module - Devices such as drives, controllers,
and computers usually require a module to provide a
communication interface between them and a network such as
PROFIBUS. A module reads data on the network and transmits it to
the connected device. It also reads data in the device and transmits
it to the network.
The RECOMM-PBUS PROFIBUS module is an module that
connects SP600 drives to a PROFIBUS network. Modules are
sometimes also called “adapters,” “cards,” “embedded
communication options,” “gateways,” and “peripherals.”
controller - Also called programmable logic controller. A solid-state
control system that has a user-programmable memory for storage
of instructions to implement specific functions such as I/O control,
logic, timing, counting, report generation, communication,
arithmetic, and data file manipulation. A controller consists of a
central processor, input/output interface, and memory.
See also
scanner.
data rate - The data rate is the speed at which data is transferred
on the PROFIBUS network. The available data rates depend on the
type of cable and total cable length used on the network:
Datalink - A type of pointer used by some SP600 drives to transfer
data to and from the controller. Datalinks allow specified parameter
value(s) to be accessed or changed without using explicit
messages. When enabled, each Datalink consumes either four
bytes or eight bytes in both the input and output image table of the
controller. The drive determines the size of Datalinks.
Baud Rate Maximum Cable Length
9.6 K 1000 m
19.2 K 1000 m
45.45 K 1000 m
93.75 K 1000 m
187.5 K 1000 m
500 K 400 m
1.5 M 200 m
3 M 100 m
6 M 100 m
12 M 100 m