8i/o data transfer (implicit messages) – Lenze E84Dxxxx User Manual
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Lenze · Decentralised frequency inverter 8400 protec (EtherNet/IP™ option) · Communication Manual · DMS 3.0 EN · 07/2014 · TD17
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8
I/O data transfer (implicit messages)
8.3
I/O assemblies
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Assembly output objects (scanner adapter)
Assembly output objects are assumed to have a 4-byte header (32-bit "run/idle header"). When
mapping the assemblies, this header will automatically be added to the data stream by most Allen-
Bradley PLC/SLC equipment.
If your PLC does not support this header (like the Rockwell PLCs do), add a preceding 32-bit header
to the output image.
You can then define the bit 0 of this header in the process image of your PLC:
• 0: Idle mode
• 1: Run mode
For the operation with Rockwell PLCs, adaptations are not required.
Assembly input objects (adapter scanner)
The assembly input objects are mapped in the adapter memory starting with byte 0.
The input objects are transmitted in a "modeless" manner, i.e. a 4-byte header (32-bit "Run/Idle
header") is not included in the transfer.
So the start address in the assembly memory map is the actual start of the first assembly data
element.
Please observe the actual assembly lengths when mapping the input objects to the controller
memory.
The contents of the input data depends on the I/O data arrangement in the inverter (
).