ProfiHub B5+ / B5+RD User Manual
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Version 2.0 – July 2014 Page 43 / 56
ProfiHub-B5-Plus-Manual-EN.docx © PROCENTEC 2014 - Copyright - all rights reserved
7 Glossary
Address Unique number of a device connected to the network. With PROFIBUS this
can be 0 to 126. 127 is a broadcast address.
Analyzer Software tool to observe the protocol traffic. Combi-Analyzers can also
inspect the signal quality.
Other term: Bus Monitor.
Example: ProfiTrace.
Backbone The primary bus cable. Most of the time only the control systems, ProfiHubs
and fiber optic couplers are connected to this cable. The field devices are
connected behind the ProfiHubs and fiber optic couplers.
Bit Time (Tbit) The bit time Tbit is the time, which elapses during the transmission of one
bit. It depends on the baudrate and is calculated as follows Tbit = 1 (bit) /
baudrate (bps).
Examples:
12 Mbps --> Tbit = 83 ns
1.5 Mbps --> Tbit = 667 ns
Busparameters Settings that define the timing behaviour on the bus. They are defined in the
master. Examples: Tslot, MaxTSDR.
C Capacitance.
DGND Digital Ground.
DIN German Institute for Standardization (www.din.de).
DP-V0 DP-V0 is the basic stage of the PROFIBUS DP communication protocol. DP-
V0 devices (master and slaves) perform the following basic functionalities:
- Cyclic exchange of I/O data between controlling and slave devices
- Device, Identifier (module) and Channel related Diagnosis
- Parameterization of DP-slaves
- Configuration of DP-slaves
DP-V1 DP-V1 is the first stage of extension of PROFIBUS DP after DP-V0. DP-V1
devices shall comply with the following features:
- Device related diagnosis is replaced by status and alarms.
- The first three octets of the user parameterization data are now
standardized
- Optionally these devices may support:
- Acyclic communication (MS1, MS2)
- If alarms are used, MS1 shall be supported
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