User manual

105G Wireless Gateway User Manual
Elpro_man_105g_1.18.doc Page 94
chosen locations are Fieldbus IN locations 0...1, and Fieldbus OUT location 0.
Fieldbus Configuration.
The next configuration step is to transfer the I/O in the Fieldbus Interface to the Radio Interface
so that the Profibus I/O is available to the radio network.
The 8 x digital output to be sent to
the Profibus slave are transferred
using a fieldbus write mapping.
Since the 8 x digital outputs are
all contained in a ‘1 Byte Out’
module, we use ‘Single Bit Mode’
for the fieldbus write mapping.
The configured mapping transfers
the 8 x I/O Registers 100..107 in
the radio interface to single bits in
Fieldbus Location 0 of the
fieldbus interface (corresponding
to the Output Address of the
corresponding ‘1 Byte Out’ module).
The 1 x analog input to be read
from the slave must now be
transferred to the radio interface.
Here we use a fieldbus read
mapping using a ‘Word Mode’
(16-bit) transfer from Fieldbus
Locations 0...1 to I/O Register 200.
Byte order can be changed by
selecting ‘MS Byte’ – see section
4.9.3 ‘Endianness’ for more
explanation.