Experimental Physics and Industrial Control System
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
- References:
- EPICS drivers for PLCs? Tony Wilson
- Re: EPICS drivers for PLCs? Carl Lionberger
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