| 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 <2023> 2024 2025 | Index | 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 <2023> 2024 2025 |
| <== Date ==> | <== Thread ==> |
|---|
| Subject: | Re: Moxa terminal server question PROBLEM SOLVED |
| From: | Michael Davidsaver via Tech-talk <tech-talk at aps.anl.gov> |
| To: | Mark Rivers <rivers at cars.uchicago.edu> |
| Cc: | "tech-talk at aps.anl.gov" <tech-talk at aps.anl.gov> |
| Date: | Fri, 17 Feb 2023 13:41:07 -0800 |
On 2/17/23 13:02, Mark Rivers via Tech-talk wrote:
Folks, I have solved the problem, and I can now program the SLC500 through the Moxa. I enabled data logging on the Moxa and I saw that the received data from the PLC was identical to transmitted data to it. I then found that this was true even when the PLC was off! It was clearly a cable problem, as Mark K. suggested. I misread the pinout of the RJ45 connector on the Moxa. Interestingly, although EIA-561 specifies the pinout for RS-232 on RJ45, I have yet to find a vendor who actually follows the EIA-561 standard. Moxa and ProSoft use a completely different pinout.
Fun right? I used to keep a printout of this table on my desk @nsls2. It wasn't exhaustive then, so I'm certain it isn't now. https://www.conserver.com/consoles/Signals/signals.html