105U-G Wireless Gateway
User Manual
Page 87
© September 2004
2)
Fieldbus Configuration.
The next configuration step is to transfer the I/O in the
Fieldbus Interace
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 (see below) 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.
