On 07/08/2020 06:55 PM, H wrote:
> On 07/08/2020 11:58 AM, John Pierce wrote:
>> On Wed, Jul 8, 2020 at 8:46 AM H wrote:
>>
>>> I believe I mentioned that the UPS has the serial port, the computer thus
>>> has USB.
>>>
>>>
>> yes, but is it 'basic serial UPS' or is it 'enhanced serial UPS' ?
Check the voltages on your adapter. I use such adapters in the machine shop
so machinists can share the CNC programs they write on a PC with their CNC
controllers. The CNC controllers can be fussy about voltages, and some
cheap RS232-USB adapters only generate +/-5vdc. It's within the RS232
On 07/08/2020 11:58 AM, John Pierce wrote:
> On Wed, Jul 8, 2020 at 8:46 AM H wrote:
>
>> I believe I mentioned that the UPS has the serial port, the computer thus
>> has USB.
>>
>>
> yes, but is it 'basic serial UPS' or is it 'enhanced serial UPS' ?the
> former do NOT use the rx/tx data of
On 07/08/2020 02:40 PM, Chris Adams wrote:
> Once upon a time, John Pierce said:
>> yes, but is it 'basic serial UPS' or is it 'enhanced serial UPS' ?the
>> former do NOT use the rx/tx data of the serial port at all, they ONLY use
>> the serial port control signals, and they probably will
On 07/08/2020 03:02 PM, Fred Smith wrote:
> On Wed, Jul 08, 2020 at 01:40:27PM -0500, Chris Adams wrote:
>> Once upon a time, John Pierce said:
>>> yes, but is it 'basic serial UPS' or is it 'enhanced serial UPS' ?the
>>> former do NOT use the rx/tx data of the serial port at all, they ONLY
On Wed, Jul 08, 2020 at 01:40:27PM -0500, Chris Adams wrote:
> Once upon a time, John Pierce said:
> > yes, but is it 'basic serial UPS' or is it 'enhanced serial UPS' ?the
> > former do NOT use the rx/tx data of the serial port at all, they ONLY use
> > the serial port control signals, and
Once upon a time, mailist said:
> Even if you did have an RS232 port on the box, the serial drivers
> for CentOS 7 have
> never worked correctly. I had an application using RS232 that
> worked perfectly
> under CentOS 6, and then worked intermittently under CentOS 7, and
> failed miserably
> on
Once upon a time, John Pierce said:
> yes, but is it 'basic serial UPS' or is it 'enhanced serial UPS' ?the
> former do NOT use the rx/tx data of the serial port at all, they ONLY use
> the serial port control signals, and they probably will NOT work with a
> USB port because they require
ill
required.
From: CentOS on behalf of mailist
Sent: Wednesday, July 8, 2020 11:11 AM
To: CentOS mailing list
Subject: [EXTERNAL] Re: [CentOS] USB-serial adapter for CentOS 7
CAUTION: This email originated from outside of the organization. Do not click
links or open attachmen
On 2020-07-08 11:28, Tate Belden wrote:
I've several USB <-> RS-232 dongles around. As well as a few embedded
devices. They all "Just Work (tm)" on Redhat, CentOS, Fedora, Debian,
Raspian and Kali.
Even if you did have an RS232 port on the box, the serial drivers for
CentOS 7 have
never
> On Jul 8, 2020, at 10:58 AM, John Pierce wrote:
>
> On Wed, Jul 8, 2020 at 8:46 AM H wrote:
>
>>
>> I believe I mentioned that the UPS has the serial port, the computer thus
>> has USB.
>>
>>
> yes, but is it 'basic serial UPS' or is it 'enhanced serial UPS' ?the
> former do NOT use
On Wed, Jul 8, 2020 at 8:46 AM H wrote:
>
> I believe I mentioned that the UPS has the serial port, the computer thus
> has USB.
>
>
yes, but is it 'basic serial UPS' or is it 'enhanced serial UPS' ?the
former do NOT use the rx/tx data of the serial port at all, they ONLY use
the serial port
at I am saying), it does not resemble
>>
>> neither serial nor null-modem cables.
>>
>> Valeri
>>
>>> ____________
>>> From: CentOS on behalf of H
>>
>>> Sent: Wednesday, July 8, 2020 10:13 AM
>>>
gt;> From: CentOS on behalf of H
>
>> Sent: Wednesday, July 8, 2020 10:13 AM
>> To: Centos Mailing List
>> Subject: [EXTERNAL] [CentOS] USB-serial adapter for CentOS 7
>>
>> CAUTION: This email originated from outside of the organization. Do
>not cl
is is already what I am saying), it does not resemble
neither serial nor null-modem cables.
Valeri
From: CentOS on behalf of H
Sent: Wednesday, July 8, 2020 10:13 AM
To: Centos Mailing List
Subject: [EXTERNAL] [CentOS] USB-serial adapter for CentOS 7
; Sent: Wednesday, July 8, 2020 10:13 AM
> To: Centos Mailing List
> Subject: [EXTERNAL] [CentOS] USB-serial adapter for CentOS 7
>
> CAUTION: This email originated from outside of the organization. Do not
> click links or open attachments unless you recognize the sender and know
I've used one on a Linux laptop, it "just worked" but the OS wasn't CentOS 7.
From: CentOS on behalf of H
Sent: Wednesday, July 8, 2020 10:13 AM
To: Centos Mailing List
Subject: [EXTERNAL] [CentOS] USB-serial adapter for CentOS 7
CAUTION: This email
If it is an older APC UPS, that uses basic serial signaling, it's not
actually a serial port, it's a criss-cross special serial cable that
manages the control lines with DSR DTR CTS and so forth. these are very
fussy cables that have to be exactly the right one or the UPS may just
abruptly shut
I need to connect an older APS UPS unit to a machine running CentOS 7.
Unfortunately the UPS only has a serial port whereas the computer does not. I
am aware that there are USB-serial adapters but that the hardware or the
drivers might fall short of expectations.
Does anyone have positive
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