RTEMS as a PLC?
ianc at goanna.iinet.net.au
Fri May 14 01:03:23 UTC 2010
On 14/05/2010 6:40 AM, Aaron J. Grier wrote:
> this is a long-shot, but has anybody out there done any investigation of
> implementing IEC 61131(-3) on RTEMS to create a programmable logic
> controller? RTEMS seems like it would be suitable to handle both a
> hard-real-time PLC loop in addition to human-machine-interface duties.
We have used RTEMS for a number of years in a Remote Terminal Unit (RTU)
based product (for Supervisory Control and Data Acquisition - SCADA)
that also contains IEC61131-3 functionality. In an RTU device the
reporting (communications) of time based eventing is more important than
the logic running in the unit so it is a bit different to a PLC type
device but RTEMS had no problems performing admirably with this.
We run the logic as a task with a certain priority in the system.
The 61131-3 system that we use is quite old and was bought in from
IsaGRAF but works OK.
Let me know if you have any more specific questions.
Goanna Technologies Pty Ltd
+61 8 9444 2634
More information about the users