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Operation
Page 55 of 87
4.
OPERATION
4.1.
MESSAGE ROUTING
When the PLX51-DF1-ENI has been set up, the DF1 message initiator sends a read/write to a
DF1 address, then routed to a Logix tag. There are various indicators to determine if the
mapping has routed the DF1 messages correctly. Refer to the diagnostics section for a more
detailed explanation.
4.2.
RSLOGIX 5000 ASSEMBLIES
When the module operates in a Logix “owned” mode, the Logix controller establishs a class 1
cyclic communication connection with the PLX51-DF1-ENI. A input and output assembly is
exchanged at a fixed interval. The UDTs convert the input and output arrays into tag-based
assemblies. Refer to the additional information section in this document for the input and
output UDTs.
Figure 4.1. – Input assembly UDT structure