BL67-philosophy
D300529 0115 - BL67 I/O modules2-2
2.1 The basic concept
BL67 is a modular IP67 I/O-system for use in industrial automation. It connects the sensors and actua-
tors in the field to the high
er-level controller.
BL67 offers modules for pra
ctically all applications:
Digital input and output modules
Analog input and output modules
Technology modules (RS232 interface, …)
A complete BL67 station counts as one station on the bus and therefore occupies one fieldbus address
in any
given fieldbus structure.
A BL67 station consists of a gateway, power
distribution modules and I/O modules.
The connection to the releva
nt fieldbus is made via the bus-specific gateway, which is responsible for
the communication between the BL67 station and the other fieldbus stations.
The communication within the BL67 st
ation between the gateway and the individual BL67 modules is
regulated via an internal module bus.
NOTE
2.1.1 Flexibility
A BL67 station can contain modules in any combination, which means it is possible to adapt the system
to practically all applications in automated industry.
2.1.2 Convenient handling
All BL67 modules, with the exception of the gateway, consist of a base module and an electronic mod-
ule.
The gateway and the base modules are snapped onto a mounting rail or
are directly mounted onto a
mounting plate. The electronic modules are plugged onto the appropriate base modules.
After disconnection of the load, the electronic modules can be plugged or pulled when the station is
bein
g commissioned or for maintenance purposes, without having to disconnect the field wiring from
the base modules.
The gateway is the only fieldbus-dependent module on a BL67 station. All other BL67 mod-
ules are not dependent on the fieldbus used.
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