turck BL20 Series - 4 BL20 I;O System

19
2020/09
4 BL20 I/O System
BL20 is a modular I/O system for use in industrial automation. It connects the sensors and actuators
in the field with the higher-level master.
BL20 offers modules for practically all applications:
 Digital input and output modules
 Analog input and output modules
 Technology modules (counters, RS232 interface...)
A complete BL20 station counts as one station on the bus and therefore occupies one fieldbus
address in any given fieldbus structure.
A BL20 station consists of a gateway, power distribution modules and I/O modules.
The connection to the relevant fieldbus is made via the bus-specific gateway, which is responsible
for the communication between the BL20 station and the other fieldbus stations.
The communication within the BL20 station between the gateway and the individual BL20 modules
is regulated via an internal module bus.
NOTE
The gateway is the only fieldbus-dependent module on a BL20 station. All other BL20
modules are not dependent on the fieldbus used.