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13.2.3 ControlLogix Example: I/O Messaging
This section will demonstrate how to setup and use an Ethernet/IP I/O
connection. Ethernet/IP I/O messaging allows the drive’s registers to be
directly mapped into tags in the ControlLogix PLC. Once an I/O connection is
established, it is automatically synchronized at an interval defined by the
Requested Packet Interval (RPI).
1) Switch to offline mode.
2) Right click on the 1756-ENET/B node under the I/O Configuration in the
controller organizer view and choose “New Module…”
3) Choose “Generic Ethernet Module” in the Select Module dialog box and
click “OK”. Refer to Figure 61.
Figure 61: Adding a New Generic Ethernet Module
4) The module properties dialog box will open (refer to Figure 62). Enter a
Name and Description which will allow easy identification of the drive on
the network (the tags created in RSLogix 5000 will be derived from this
Name). Because all drive data is stored as 16-bit registers, change the
“Comm Format” selection to “Data-INT”. Enter the IP address of the
targeted interface card.
In the “Connection Parameters” portion of the dialog box, enter the
following information:
Input: The Input Assembly is the collection of monitor data that is
produced by the interface card and is received as an input to the PLC. Its
structure is defined by the Produced Register Configuration as described in