Technical data

Glossary
PROFIBUS Network Manual
344 System Manual, Edition 04/2009, C79000-G8976-C124-03
Master-slave process
Bus access method where only one node is → master, and all other nodes are → slaves.
Max. retry limit
Max. retry limit is a bus parameter and specifies maximum number of call repetitions to a DP
slave.
max_T
SDR
max_T
SDR
is a bus parameter and specifies the maximum protocol processing time of the
responding node (station delay responder).
MBP
MBP (Manchester coded and Bus Powered) identifies a synchronous transmission technique
with simultaneous power supply to the nodes via the bus cable. MBP is defined as a
transmission technique for -> PROFIBUS PA in IEC 61784-1.
MBP-IS
MBP-IS (Intrinsically Safe) in addition to the technology of MBP-LP, this also meets the
requirements of intrinsic safety to IEC 60079-27. MBP-IS is defined in as a transmission
technique for -> PROFIBUS PA in IEC 61784-1.
MBP-LP
MBP-LP (Low Power) is an MBP version with limited power consumption by the bus nodes.
MBP-LP is defined as a transmission technique for -> PROFIBUS PA in IEC 61784 1.
min_T
SDR
min_T
SDR
is a bus parameter and specifies the minimum protocol processing time of the
responding node (station delay responder).
Nodes
A device that can send and receive data on PROFIBUS as a master or slave.
Optical power budget (FO)
This is available between a sender and receiver on a fiberoptic link. It indicates the
difference between the optical power coupled into a particular fiber by the optical transmitter
and the input power required by an optical receiver for reliable signal detection.