Experimental Physics and
Industrial Control System

"Mark Rivers" <[email protected]> · Tue, 8 Jul 2008 15:16:35 -0500

We've had good results with the Moxa units as well.  

We've had some problems with the Chase IOLAN units.  They sometimes
don't recover from a power failure correctly, and if a device sends them
binary data they can get into a hung state requiring a reboot.

One thing about such devices is that you cannot use asyn to configure
them (baud rate, parity, etc.), you can only use asyn for I/O.

Mark

-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of Steve Shoaf
Sent: Tuesday, July 08, 2008 2:46 PM
To: Dave Reid
Cc: EPICS tech-talk
Subject: Re: Ethernet-to-RS232

Dave,

At the APS we have been using the MOXA Nport serial device servers.   
They come in 1, 2, 4, 8, or 16 port versions.  We use the 5410 4-port  
model the most which costs around $400.  We've been using them for  
several years and they work fine.

http://www.moxa.com/product/External_Device_Servers.htm

Steve Shoaf
Advanced Photon Source
Controls Group

On Jul 8, 2008, at 2:17 PM, Dave Reid wrote:

> Hi everyone...
>
> We are looking for an Ethernet-to-RS232 device that we can use in a  
> manner similar to the Agilent GPIB gateway, meaning using ASYN to  
> send messages out over our network and then out to RS232 devices.
>
> Is anyone else doing this?  Have a product that they've had good  
> results with or any to avoid?
>
> Thanks...
>
> dave reid
> University of Washington Medical Center

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System