Re: [EXTERNAL] Gamma DIGITEL MPCq: mismatch after 0 bytes ""

["Baily, Scott A via Tech-talk" <tech-talk at aps.anl.gov>]

The issue is the prompt. I can think of several ways to handle this, I just changed the in termination to be /r/r/n>   The prompt is sent separately to technically it’s not part of the termination, but it is always sent after the response.

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From: Tech-talk <tech-talk-bounces at aps.anl.gov> on behalf of J. Lewis Muir via Tech-talk <tech-talk at aps.anl.gov>
Sent: Wednesday, 08 July 2026 17:22:18
To: EPICS Tech-Talk <tech-talk at aps.anl.gov>
Subject: [EXTERNAL] Gamma DIGITEL MPCq: mismatch after 0 bytes ""

 

Hi, Tech-Talkers!

I'm using the driver at

  https://urldefense.com/v3/__http://github.com/epics-modules/ip/blob/master/ipApp/Db/MPC_Ethernet.template__;!!Bt8fGhp8LhKGRg!BmWtxEb5lgCs6dhQy2XSk82mrXDHxsxPCPtxPTGc_8xz2T6kAUg6_qheSTOSsqA3Jj4VDCtPHtEwLHJkB2nHQg$

to control Gamma DIGITEL MPCq devices connected via Ethernet, and it
mostly works, but I sometimes get errors on the IOC console like the
following (it seems to happen for all of them, so not limited to just
one device), and I'm wondering, does anyone know what might be going
wrong and how to fix it?

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2026/07/08 11:50:09.782653 GAMMA5 17ida:ip9:CUR: Input ">OK 00 1.1E-04 AMPS<0d><0d><0a>>..."
2026/07/08 11:50:09.782668 GAMMA5 17ida:ip9:CUR: mismatch after 0 bytes ""
2026/07/08 11:50:09.782674 GAMMA5 17ida:ip9:CUR: got ">OK 00 1.1..." where "OK 00 " was expected
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This same pattern of errors occurs for various values (e.g., CUR,
GAUTOS, PRES, SIZE, VOLT, and STAT).

Thanks!

Lewis