Experimental Physics and
Industrial Control System

Rolf Keitel <[email protected]> · Tue, 18 Apr 2000 22:26:48 -0700

Gary Carr wrote:

> Has anyone done device support for devices accessed directly through
> ethernet? Socket interface I would assume.
>
> Our magnet team is looking at designing a magnet power supply controller
> with a direct ethernet interface, rather than the serial interfaces we have
> mostly used in the past.

We have done two things here:
a) wrote device/driver  support for Modicon PLCs using TCP/IP and interfacing
to the NOE 211 Ethernet     module. This package supports ao, ai, bo, bi, mbbo,
mbbi, mbboDirect, and mbbiDirect records. TCP/IP transactions (Polling the PLC)
are done by spawned tasks which interface to EPICS through memory buffers.

b) interface via TCP/IP and UDP to RF controllers which are developed and
maintained by the TRIUMF RF group. This package uses subroutine records which
are scanned periodically and maintain their internal state machines.

--
+-------------------------------------------------+
| Rolf Keitel, TRIUMF         Tel: (604) 222-7453 |
| Group Leader ISAC Controls  Fax: (604) 222-7307 |
| and Electronics Development                     |
| Vancouver, B.C., Canada                         |
+-------------------------------------------------+

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System