Re: Further OMS PC78 questions

["James P. Withrow via Tech-talk" <tech-talk@aps.anl.gov>]

Kevin - 

AsynOctetGetInputEos L0 initially reported "". In the IOC's st.cmd file, I added 'asynOctetSetInputEos("L0", 0, "\n\r")'. I still get the same result from the IOC initialization, but now when I caput the 'WY' command, the port only reads back the first 8 characters:

2025/12/05 11:33:58.486 /dev/ttyS0 write 2

WY

2025/12/05 11:33:58.497 /dev/ttyS0 read 8

\n\rPC78 v

Invalid entry-card #0

In the PC78 manual, it states that echo off is the default at power-up.

-Jim

Jim Withrow, Research Support Specialist - jwithrow@cornell.edu

NE-CAT, Cornell University - https://necat.chem.cornell.edu

Advanced Photon Source, Sector 24

9700 S. Cass Avenue, Building 436 E001

Lemont, IL 60439

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From: Peterson, Kevin M. <kmpeters@anl.gov>
Sent: Friday, December 5, 2025 9:31 AM
To: James P. Withrow <jwithrow@cornell.edu>; Tech Talk EPICS <tech-talk@aps.anl.gov>
Subject: Re: Further OMS PC78 questions

 

This output is interesting.  The \n\r at the start seems like an unhandled terminator from a previous command:

2025/12/05 07:58:37.732 /dev/ttyS0 write 2
WY
2025/12/05 07:58:37.744 /dev/ttyS0 read 8
\n\rPC78 v

Please run the following command on the IOC's shell:

asynOctetGetInputEos L0

Is the input end of string set to \n\r or \r?  I think either of those should work.

Kevin