Experimental Physics and
Industrial Control System

Bill Brown <[email protected]> · Wed, 24 Nov 1999 07:32:14 -0800

At 12:17 PM 11/23/99 -0800, Carl Lionberger wrote:
>
>We've developed a record that uses the block transfer calls in drvAb.c to
>communicate with a PLC-5 over remote I/O from a 6008 scanner.  It's similar to
>the abDcmRecord but talks to a PLC-5 port configured as a remote I/O adapter
>rather than to a DCM card.
>
>   Carl
>
>Tony Wilson wrote:
>
>>         We are currently evaluating various types of PLCs for use at the
CLS.
>> We would like to know which types have EPICS drivers available.  I
>> currently have a driver for Allen Bradley using df1 protocol over a
>> serial line.  Though I am unsure if it is a general driver or only
>> supports specific modules.  I have been unsuccessful in locating
>> anything for MODICON (Modbus or Modbus+) or Siemens hardware.
>> Information about any of these three dirvers would be welcome.
>>

We're presently working on a DeviceNET interface, which will initially
be talking to an A-B scanner and used to interface to a PLC which will
control power supplies.  We're using the SBS "IP-DeviceNET" IPac for the
interface.

At this point we've got the driver support for the IP working and have it
talking to a simple DeviceNET proto board.  Still a long way to go to turn
it into a useful EPICS device.

-bill

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System