Experimental Physics and
Industrial Control System

john sinclair <[email protected]> · Mon, 8 Mar 2004 11:59:41 -0500

Kay,

Is this also true for FlexLogix I/O?

John Sinclair

On Monday 08 March 2004 11:13 am, Kay-Uwe Kasemir wrote:
> On 2004.03.08 02:24, Kiman Ha wrote:
> > Hello! Kay and Stephanie,
> > Last Feb, I asked about AB SLC5/05 processor for Ethernet TCP/IP EPICS
> > driver and support.
> > The AB Comapny people said SLS5/05 PLC processor support EtherNet/IP.
>
> Yes, it might support the common portion of the EtherNet/IP
> protocol, the part that's documented at www.odva.org.
>
> That will allow you to read the serial number of your SLC5/05's
> ethernet interface.
>
> In addition, you need the CIP service codes that are specific
> to your PLC, the ones that allow you to read/write tags
> or files or whatever the data of interest is called on the
> respective architecture.
>
> > I known your alread developed EtherNet/IP drivers and support for SNS
> > project.
>
> That EtherNet/IP driver package uses the CIP codes for the
> AB ControlLogix 5000 series as described in
> AB Publication 1756-RM005A-EN-E.
>
> The latter publication also lists SCL commands,
> but they are very different from the CIP service codes
> for the ControlLogix series.
> Control Logix uses CIP service codes
> 0x4C : read data
> 0x4D : write data
> 0x0A : multi request
> and all those adress string tags on the Logix5000.
>
> As far as I know, the SCL5 doesn't have string tags
> but uses file/element/subelement addressing.
>
> So I'm afraid those AB people who talked to you can
> recite "EtherIP" from some SLC5 brochure but don't
> really understand the protocol.
>
> This means that the ether-ip driver for the ControlLogix 5000 won't
> talk to the SLC5, and making it talk to the SLC5 would be a major deal,
> close to starting from scratch.

-- 
John Sinclair

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System