SIEMENS
3/255
Siemens IK PI · 2015
PROFIBUS
Network transistions
DP/DP coupler
3
■
Overview
•
Interconnecting two PROFIBUS DP networks
•
The interchange of data between both DP networks takes
place by internal copying in the coupler.
■
Application
The PROFIBUS DP/DP coupler interconnects two PROFIBUS DP
networks. Byte data (0 … 244 byte) is transferred from the DP
master of the first network to the DP master of another network
and vice versa.
The principle corresponds to the hardware wiring of inputs and
outputs used today. The coupler has two independent DP inter-
faces with which the two DP networks are connected.
The DP/DP coupler is a slave on each DP network. The inter-
change of data between both DP networks takes place by inter-
nal copying in the coupler.
■
Design
The DP/DP transceiver is housed in a 40 mm casing of the
S7-300 series. It can be mounted on a standard mounting rail
(7.5 mm and 15 mm) as well as on a mounting rail for the S7
design.
The preferred arrangement is upright in a row, side by side, and
without clearance.
The transceiver is connected to the PROFIBUS DP networks
through an integral 9-pin sub-D connector.
■
Function
The DP/DP coupler continuously copies the output data from
one network to the input data of the other network (and vice
versa).
Functions
•
Data exchange of up to 244 byte of input and output data of
which up to 128 >byte can be consistent
•
Up to 16 input/output ranges for exchanging data
•
If one side fails, the outputs on the other side maintain the
previous value
•
Support of DPV1 with full diagnostics
•
Adjustment of DP/DP coupler either via switch or STEP 7
•
Different baud rate settings are possible
•
Electrical isolation between the two DP networks
•
Power is supplied to both sides
Parameter assignment
The PROFIBUS DP addresses are set via two DIP switches on
the top of the coupler.
The coupler is configured either with STEP 7 or with a configur-
ing tool which integrates the DP/DP coupler with the help of a
GSD file.
The data length is adjusted with the corresponding configuring
tool.
■
Technical specifications
■
Ordering data
Article No.
Note:
The manual is available free on the Internet.
■
More information
Brochures
Information material for downloading can be found in the
Internet:
DP/DP transceiver
PROFIBUS transmission rate
max. 12 Mbit/s
Interfaces
• PROFIBUS DP
9-pin Sub-D connector
Supply voltage
24 V DC
Current consumption typ.
150 mA
Mounting
Upright (DIP switches above)
Perm. environmental conditions
• Operating temperature
-
horizontal mounting
0°C … +60°C
-
all other mounting positions
0°C … +40°C
• Transport/storage temperature
-40 °C … +70 °C
• Relative humidity
10 ... 95 % at +25 °C
Design
• Dimensions (W x H x D) in mm
40 x 127 x 117
• Weight
approx. 250 g
Degree of protection
IP20
DP/DP coupler
6ES7158-0AD01-0XA0
© Siemens AG 2014