Festo Кабели и принадлежности - Manual (Page 13)

Contents and general instructions
XI
Festo P.BE−SPC200−COM−PDP−EN en 0901c
Product−specific terms and abbreviations
The following product−specific abbreviations are used in this
manual:
Term/abbreviation Meaning
123
d
Decimal DP identifiers or parameter numbers (PNU) are marked with a
subscript d".
123
h
Hexadecimal DP identifiers or parameter numbers (PNU) are marked with
a subscript h".
AK See under reply identifier or task identifier
BCD Binary coded decimal
Bus segment Bus cable between two terminating resistors. A bus segment contains
maximum 32 slaves. A PROFIBUS−DP system consists of at least one bus
segment with at least two slaves. With the aid of repeaters further bus
segments can be connected.
Byte 8 bits; basis type for PROFIBUS telegrams
Consistency A data range, which is defined as consistent, is transmitted complete,
i.e. in a bus cycle.
GSD 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.).
I Digital input of the SPC200
I/Os Inputs and outputs
LSB Least significant bit (lower−value bit)
MSB Most significant bit (higher−value bit)
Modules Function cards which can be plugged into the rack of the SPC200.
Parameter channel
(PKW) Telegram part used for transmitting parameters
(PKW = parameter identifier value)
Parameter identifier
(PKE) Integral part of the parameter channel (PKW) which contains the task and
reply identifiers (AK) and the parameter number (PNU).