Siemens SIMATIC ET 200AL, System Manual

Page: 1927 / 2255

Description
2.2 Structure of PROFIBUS networks
PROFIBUS with STEP 7 V13
30
Function Manual, 12/2014, A5E03775446-AC
PROFIBUS Terminator
The PROFIBUS Terminator forms an active bus termination. Bus devices can be switched
off, removed or replaced without affecting data transmission. This is particularly true for bus
devices on both ends of the bus cable at which terminating resistors must be connected or
supplied. The PROFIBUS Terminator can be mounted on a standard mounting rail.
IE/PB Link PN for the connection of a PROFIBUS segment to an Industrial Ethernet network
The IE/PB Link PN IO as independent component provides the seamless transition between
Industrial Ethernet and PROFIBUS. Through the use of IE/PB Link PN IO as substitute on
the Ethernet, the existing PROFIBUS devices can continue to be used and can be integrated
into a PROFINET application.
A PROFINET IO controller is required for this configuration. The IE/PB Link PN acts as
master on the PROFIBUS end.
IWLAN/PB Link PN IO as gateway between LAN and PROFIBUS
PROFIBUS devices can be coupled to PROFINET IO by means of IWLAN/PB Link PN IO.
This means you can integrate existing PROFIBUS configurations into PROFINET.
The IWLAN/PB Link PN IO supports the use of IWLAN and WLAN antennas for wireless
data transmission, for example, in suspended monorail systems or conveyor systems.
Because of the PROFINET support, the numerous PROFIBUS system services, for
example, diagnostics by bus, can continue to be used.
A PROFINET IO controller is required for this configuration. The IWLAN/PB Link PN IO acts
as master on the PROFIBUS end.
CANopen module for connection to CAN
You can use the CANopen module to easily connect CANopen applications to PROFIBUS.
Typical areas of application:
●
Control of hydraulic valves/hydraulic axes in vehicles
● Control of motors in packaging machines and on conveyor belts
● Use in wind turbines for detection of angular encoders
● Detection of HMI devices on machines, e.g., joysticks
● Detection of measured data from displacement transducers, inclination sensors or angle
encoders on tower cranes or gantry cranes
DP/DP coupler for connection of two PROFIBUS networks
The PROFIBUS DP/DP coupler is used to connect two PROFIBUS DP networks. Data
(0 to 244 bytes) is transmitted from the DP master of the first network to the DP master of
another network and vice versa.
The DP/DP coupler comes equipped with two independent DP interfaces that establish the
connection to the two DP networks. There is one slave at each DP network. The data
exchange between the two DP networks takes place by internal copying in the coupler.