User manual

105G Wireless Gateway User Manual
Elpro_man_105g_1.18.doc Page 122
To make I/O data available via Ethernet/IP, ensure that the Enable Ethernet/IP checkbox on the
Ethernet Settings page is checked. Appropriate Fieldbus Mappings need to be configured to link
the required I/O registers to the Fieldbus Interface, as described above in the Profibus and
Modbus/TCP sections. An “I/O Instance” for each fieldbus link must also be specified so that
the configured I/O data is made available to one of the six possible Ethernet connections.
In this example, 40 I/O Registers (80 bytes) are transferred to I/O Input Instance 1 (i.e. Ethernet
connection 1). As per the table below, this data would then be available via Ethernet/IP in class
04h, Instance Attribute 64h or in class A0h, Instance Attribute 1. If the Disable option is
checked, the I/O transfer will not be made available to Ethernet/IP. The table below shows the
possible IO Instances and their corresponding Ethernet/IP locations.
Byte order can be changed by selecting ‘MS Byte’ – see section 4.9.3 ‘Endianness’ for more
explanation.
IO Instance Assembly Object Vendor Specific Object
IO Input Instance 1-6 Class 04h, Instance 64h-69h Class A0h, Attribute 01h-06h
IO Output Instance 1-6 Class 04h, Instance 96h-
9Bh
Class A1h, Attribute 01h-06h