5.5. ConveyLinx Ethernet Definition
All Ai2 Modules communicate over Ethernet network and use TCP/IP based protocols for normal function.
All TCP/IP protocols require that each device on a network have a unique I.P. address assigned to it in
order to function properly.
An I.P. address is in the format of: AAA.BBB.CCC.DDD where AAA, BBB, CCC, and DDD are numerical
values between 0 and 255.
For example; if a module has an I.P. address of “192.168.25.20” then its Subnet address is “192.168.25”
and its Node is 1 (i.e. 20-19 = 1)
At the factory, each and every module is assigned an I.P. address that is used by automated testing
equipment and fixtures so that every module is verified prior to shipment. When a module is taken “out of
the box” it will still have this I.P. address stored in its memory.
When the Auto Configuration Procedure is initiated; one of the many things that occur is that each module
is automatically assigned a new I.P. address. This I.P. address for all modules is determined by the Subnet
of the I.P. address already stored inside the most upstream module. Even if all downstream modules from
the most upstream have the same or different Subnet or Node values; these downstream modules will have
their Subnet changed to the existing Subnet of the most upstream module. Furthermore, when the Auto
Configuration Procedure occurs; the most upstream module will also have its DDD octet value changed to
20. All downstream Modules will then have their respective DDD values automatically set beginning with 21.
For the purposes of ConveyLinx; the AAA.BBB.CCC portion of the I.P. address taken
together is defined as the Subnet. The DDD value of the address minus 19 is defined as
the Node.
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PULSEROLLER ConveyLinx-Ai2 User's Guide - 1.7
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