#crocodile #fly #low #slow
MicroLogix 1100 and 1400 controllers are not designed, intended, advertised, promoted, documented, or supported to control I/O devices on an EtherNet/IP network.
If an adapter device emulates the cyclic I/O connection (Class 1, in EtherNet/IP) timeout feature when non-cyclic messages (Class 3) are used to read and write the Assembly objects that would otherwise be used by an I/O connection, control functionality can be accomplished. A-B variable frequency drives, for example, perform that function by emulating SLC-500 data tables, with a specific register to which you send a Timeout value.
It is only as fast and stable as the programmer's ability to write MSG instruction code and manage the load on the controller's communications subsystem. I do not recommend it as an intentional design.
That's a big "IF". While SMC Pneumatics was an early member of the ODVA and has solidly built, reliable, well-tested network adapters, I don't see anything in the EX260-SEN1 documentation that suggests it will accept unscheduled messages to Assembly 100 and 150 and act as though there is a cyclic I/O connection created.
The fact that the RPI value for the I/O connection is part of the EDS file suggests you might be able to write to it and the module might treat it like a timeout even when there's no Class 1 connection established. But there's nothing in the documentation to support that optimistic thinking.
