turck BL20-GW-CANOPEN, User Manual, Page: 17 / 95

D301087 1211 - BL20 CANopen
2-3
BL20 Components
2.2 BL20 Components
For a detailed explanation of the individual BL20 components, please refer to chapter 2 and chapter 4.
The "Appendix" to this manual contains (amongst others) a list of all BL20 components and the
assignment of electronics modules to base modules.
2.2.1 Gateways
The gateway connects the fieldbus to the I/O modules. It is responsible for handling the entire process
data and generates diagnostic information for the higher-level master and the software tool
I/Oassistant.
Gateways with integrated power supply
The BL20 gateway BL20-GWBR-CANOPEN offers an integrated power supply unit for feeding the
gateway and the connected I/O modules.
It is not necessary to supply each individual module with a separate voltage
Gateways without power supply
2.2.2 Power Distribution Modules
Figure 2-1:
Gateway
BL20-GWBR-
CANOPEN
Note
The gateways without integrated power supply unit need an additional power supply
module (bus refreshing module) which feeds the gateway an the connected I/O modules.