Festo Электромотор MTR-DCI - Manual (Page 19)

Contents and general safety instructions
XVII
Festo P.BE-MTR-DCI-PB-EN en 1209a
Term/abbreviation Meaning
Consistency A data range which is defined as consistent is transmitted complete,
i.e. in one bus cycle.
FPC Festo Parameter Channel
GSD/GSG file Device master file in which all specific features of the slave are saved
(e.g. number of I/Os, number of diagnostic bytes etc.).
LSB Least significant bit
MSB Most significant bit
Octet 8 bits; basic type for PROFIBUS telegrams
Parameter channel (PKW) Telegram part used for transmitting parameters (PKW = parameter
identifier value)
Parameter identifier (ParID) Integral part of the parameter channel (PKW) which contains the re-
quest and response identifiers (AK) and the parameter number (PNU).
Parameter number (PNU) Parameters which can be transmitted via the parameter channel are
addressed by their parameter number (PNU). The parameter number
is an integral part of the parameter identifier (ParID) and is used for
identifying or addressing the individual parameter.
ParID See parameter identifier
PKW See parameter channel
PNU See parameter number
Request identifier (AK) Integral part of the parameter channel in request telegrams specifying
the type of request for processing of a parameter.
Repeater Tool for amplifying bus signals and for coupling segments over long
distances.
Request telegram Telegram sent from the master to the slave (request of master)
Response identifier (AK) Integral part of the parameter channel in response telegrams specify-
ing the type of response from processing of a parameter.
Response telegram Telegram sent from the slave to the master (slave response)