8 /1105 Hans Turck GmbH & Co.KG • Witzlebenstraße 7 • D-45472 Mülheim an der Ruhr • Tel. +49 208 4952-0 • Fax +49 208 4952-264 • www.turck.com
BL67 and PROFIBUS-DP (Overview)
• Open fieldbus standard according
to EN 50170
• Transmission medium:
2-wire cable, twisted, shielded
• Transmission technology: RS485
• Bus topology: line structure with bus
termination on both ends
• Bus access mode:
Master-Slave/Master-Master with
"Token Passing"
• 32 stations per segment,
126 stations max.
• Repeater modules for signal
regeneration
• Addressing via coding switches
• Configuration/parameterisation of
devices via standardised device
data base files (GSD files = Geräte-
stammdaten-Dateien)
PROFIBUS-DP
PROFIBUS-DP systems excel in their fast
system response times. At a transmission
rate of 12 Mbps, 512 bit input and 512 bit
output data can be transferred, for
instance, in less than 2 ms to 32 stations.
Configuration/Parameterisation
The address setting of the modules can
be freely selected from 1...125 via three
decimal coded rotary switches
ATTENTION:
The PROFIBUS-DP addresses 000, 126
and 127 are reserved and may not be
used for the BL67 I/O-System..
The system speed corresponds to the
transmission rate set via the PROFIBUS
master. The transmission speed is auto-
matically detected by the BL67modules
(auto baud).
The manufacturer provides device data
base files (GSD files = Gerätestammdaten)
for the individual PROFIBUS stations for
configuration. TURCK additionally offers
the I/O-ASSISTANT, a helpful software
tool for configuration, parameterisation
and set-up of the individual modules.
.
PROFIBUS (Process Field Bus) is a
standardised and open communication
fieldbus. It complies with EN 50170 and
consists of three different protocol profiles:
– PROFIBUS-FMS (Fieldbus Message
Specification) is primarily designed for
data exchange between programmable
logic controllers (PLCs or PCs).
– PROFIBUS-DP (Decentral Periphery)
is designed for fast data exchange
between the central control and the
remote field devices
– PROFIBUS-PA (Process Automation)
is an intrinsically safe network for the
process industry.
BL67 components support PROFIBUS-
DP. Within the PROFIBUS-DP network,
the central control (e.g. the PLC)
communicates with the remote input and
output stations via a fast serial connection.
Data are mainly exchanged cyclically.
System data PROFIBUS-DP
Number of I/O stations 126 (incl. repeaters)
Number of I/O points approx. 6000, dependening on master
Transmission medium shielded twisted copper cable, 2 x 0.34 mm²
Transmission Length of Max. numbers of Max. numbers of
speed bus line (max.) repeaters
1
) stations
9,6...93,75 kbps 1200 m 2 126
187,5 kbps 1000 m 2 126
500 kbps 400 m 4 126
1500 kbps 200 m 6 126
3000...12000 kbps 100 m 9 126
1
) At maximum transmission speed up to 9 repeaters of the TURCK series REP-DP 0002 can be
connected in series (applicable to DP-profile bus parameters). If more repeaters are to be
cascaded, the bus timing parameters must be adapted accordingly by the user.
To Next Page
Loading...
