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NS 4000 Hardware Components
WAGO I/O Modules
MODBUS Fieldbus Coupler (750-314)
This buscoupler allows connection of the WAGO-I/O-SYSTEM as a slave
to the MODBUS fieldbus. The buscoupler is capable of supporting all bus modules.
The bus coupler automatically configures, creating a local process image which may
include analog, digital or specialty modules. Analog and specialty module data is
sent via words and/or bytes, digital data is sent bit by bit.
MODBUS allows the storing of the process image in the corresponding Master
control (PLC, PC or NC).
The data of the analog modules is stored in the process image which is created
automatically according to the order in which the modules are connected to
the buscoupler. The bits of the digital modules are sent byte by byte and added
to the analog data (registers). If the amount of digital information exceeds 8 bits,
the buscoupler automatically starts with a new byte.
Fig. 63. WAGO MODBUS Fieldbus Coupler
Chapter 3. Technical Specification
165
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