Ethernet/IP Device Support and CompactLogix

[John Dobbins <jad@lepp.cornell.edu>]

Dear All,

I have just used the EPICS Ethernet/IP device support to talk to an 
Allen Bradley CompactLogix (i.e. not ControlLogix) module.

So far I have written a bit to a DINT and read a PLC boolean. The only 
trouble encountered was an error/warning message on start-up:

    drvEtherIP: launch scan task for PLC 'compactlogixtest'
    EIP_startup: cannot determine target's identity


Before I go any further with this test I wanted to ask if there is any 
chance of EPICS community support for CompactLogix - OR - should I send 
back this loaner, tell my colleagues that EPICS only supports 
ControlLogix, and turn my attention to other tasks?

This test came about because a colleague was interested in CompactLogix 
as it appeared to have lower capital costs. I gave them the spiel about 
EPICS device support only being demonstrated to work with ControlLogix 
but said if they could get a loaner I would give it a try.

Any advice and ideas welcome. Regards,

John Dobbins
Lab for Elementary Particle Physics (and ERL wanna-be)
Cornell University
Ithaca, NY