Experimental Physics and
Industrial Control System

"Mark Rivers" <[email protected]> · Sat, 17 May 2008 15:23:45 -0500

Steve,

I just looked at the Eurotherm online documentation.  The 2416 and 2404 can each be ordered with several different communications protocols (Modbus, El-Bisync).  It is encoded in the part number (YM=2-wire RS485 Modbus, etc.).

Looking at the Modbus manual for the 2400 series:

http://www.eurotherm.com.au/control/product/comms/2000_mb_m_ha026230_2.pdf

it looks like my Modbus driver should work.  You just need to define the register addresses for each function in your database.

Mark

________________________________

From: [email protected] on behalf of David Maden
Sent: Sat 5/17/2008 10:43 AM
To: Steve Lewis
Cc: Keith Kishiyama; [email protected]
Subject: Re: Looking for support for Eurotherm 2404 PID

Steve Lewis wrote:
> The Eurotherm 2404 PID is a temperature controller that uses the Modbus
> protocol over a serial .  Does anyone have a streamdevice/asyn protocol
> or any other device/driver support for it?

We are controlling a couple of furnaces via a Eurotherm 2416 with RS-232-C
interface. I don't know if it uses the same protocol as the 2404 though,
but our code might be a starting point for you.

The protocol of the Eurotherm 2416 includes BCC checksums, which Dirk
Zimoch's stream driver couldn't handle at the time I wrote the EPICS
support. As a result, our code is flat EPICS database of soft records with
an snl program calling functions to send and receive messages to the device
via a pseudo-terminal VxWorks device driver.

Regards, David
--
                                [email protected]
      _/_/_/   _/   _/_/_/     SLS Experiment Integration Group
     _/       _/   _/         Paul Scherrer Institute
      _/_/   _/     _/_/     CH-5232 Villigen-PSI
         _/ _/         _/   Tel: +41 56 310 3616
    _/_/_/ _/_/_/ _/_/_/   Fax: +41 56 310 5090

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System