turck BL20-GW-CANOPEN, Руководство пользователя

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BL20 Philosophy
D301087 1211 - BL20 CANopen 2-2
2.1 The Basic Concept
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.
Flexibility
All BL20 stations can be planned to accommodate the exact number of channels to suit your needs,
because the modules are available in block and slice design.
A BL20 station can contain modules in any combination, which means it is possible to adapt the system
to practically all applications in automated industry.
Compactness
The slim design of the BL20 modules (gateway 50.4 mm / 1.98 inch, slice 12.6 mm / 0.49 inch and block
100.8 mm / 3.97 inch) and their low overall height favor the installation of this system in confined
spaces.
Easy to handle
All BL20 modules, with the exception of the gateway, consist of a base module and an electronics
module.
The gateway and the base modules are snapped onto a mounting rail. The electronics modules are
plugged onto the appropriate base modules.
The base modules are designed as terminal blocks. The wiring is secured by tension clamp or screw
connection. The electronics modules can be plugged or pulled when the station is being commissioned
or for maintenance purposes, without having to disconnect the field wiring from the base modules.
Note
The gateway is the only fieldbus-dependent module on a BL20 station. All other BL20
modules are not dependent on the fieldbus used.