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Subject: Re: ethernet-based Gamma ion pump controller (mpc)
From: Wesley Moore <wmoore@jlab.org>
To: Scott Baily <sbaily@lanl.gov>
Cc: EPICS tech-talk <tech-talk@aps.anl.gov>
Date: Fri, 29 Jun 2012 11:15:05 -0400 (EDT)
Hey Scott,
    I've done support Ethernet and serial support for the single channels (SPCe).  I haven't looked at the manual for the MPC, but there shouldn't be much difference.  You'll likely need two different protocols.  The serial uses a checksum and the Ethernet doesn't.  You can send me your protocol file if you want me to take a look.

Wesley

----- Original Message -----
From: "Scott Baily" <sbaily@lanl.gov>
To: "EPICS tech-talk" <tech-talk@aps.anl.gov>
Sent: Thursday, June 28, 2012 7:51:20 PM
Subject: ethernet-based Gamma ion pump controller (mpc)

We're trying to control a Gamma ion multi-pump controller via ethernet 
from a soft ioc.  The problem is that we can't get any response from the 
controller. We're using a stream device protocol file that previous 
worked for an RS232 gamma ion pump controller.  Although I have also not 
been able to get any response by telnetting directly to the port and 
attempting to issue commands.
This device uses a checksum, so the problem could be that the checksum 
is incorrect or some other problem such as the configuration of the MOXA 
serial to ethernet card that's internal to the device. It appears that 
I've configured the bit rate, parity, and stop bits to match the devices 
settings.  What else should I be checking?  perhaps the response is just 
not being transmitted over ethernet and I should configure data packing? 
or something else.
-- 
Scott Baily
AOT-IC, MS H820
Los Alamos National Laboratory
Los Alamos, NM 87545
ph: (505) 606-2260

Replies:
Re: ethernet-based Gamma ion pump controller (mpc) Scott Baily
References:
ethernet-based Gamma ion pump controller (mpc) Scott Baily

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