Fieldbus Mappings - Weidmuller WI-GTWY-9 User Manual

WI-GTWY-9-xxx Wireless Gateway
Radio Interface
10,000 x 16-bit
I/O Registers

4.9.1 Fieldbus Mappings

The Fieldbus Interface is divided into two distinct areas. The IN Area contains input data that is
made available to the host device. The OUT Area contains output data from the host device. This
is in contrast to the Radio Interface, in which each 16-bit register can be used as input or output.
Also note the size of the Fieldbus Interface is variable, depending on the type of fieldbus.
WI Series Configuration Software provides user configurable Fieldbus Mappings to link the
required Fieldbus I/O to the Radio Interface. Write mappings write I/O values from the Radio
Interface to the Fieldbus IN Area. Read mappings read I/O values from the Fieldbus OUT Area
to the Radio Interface.
If you want to send a value from the WI-GTWY-9-xxx to the host device, use a Fieldbus Write
Mapping. The input data from the Radio Interface (i.e. input data that has either come in from the
radio or from local I/O) will be transferred to the IN Area via the fieldbus write mapping. The
host device can then read this input data from the IN Area.
If you want to send a value from the host device to the WI-GTWY-9-xxx, use a Fieldbus Read
Mapping. The host device can write output data to the OUT Area. The output data from the OUT
Area will then be transferred to the Radio Interface via the fieldbus read mapping. The radio
driver can then either send this output over the radio or to a local I/O.
Fieldbus Interface
Profibus 244 Bytes
Modbus/TCP 2048 Bytes
Ethernet/IP allows 6 input
connections; each
Write
connection Max 512 bytes
from
I/O
Modbus Plus 2048 bytes
Reg
DeviceNet 512 bytes
Profibus 244 Bytes
Modbus/TCP 2048 Bytes
Ethernet/IP allows 6 output
connections; each
Read to
connection Max 512 bytes
I/O Reg
Modbus Plus 2048 bytes
DeviceNet 512 bytes
WI-GTWY-9-
xxx Module
IN Area
OUT Area
V1.18
Read from
Host
Write from
Host
Fieldbus
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