[Nut-upsuser] SU2200RTXLCD2U and protocol 4006

Ambrogio Coletti ambrojohn at gmail.com
Mon Jul 3 16:48:43 UTC 2017

Thank you for your answer.
I will try to investigate the possibility that the Tripplite serial cable
has a different pinout than a standard RS-232 serial cable.

I wouldn't use the NUT at this point because I don't think I will be able
to write a software update to adapt the NUT to my needs.

My idea was first to test the protocol via a serial terminal client
directly connected to the UPS, and then write some simple code from scratch
to implement the protocol and use it for my basic needs.

Do you think that is a feasible approach?


On Mon, Jul 3, 2017 at 10:17 AM Larry Fahnoe <fahnoe at fahnoetech.com> wrote:

> I don't have the Tripp-Lite model that you have, however the NUT HCL
> http://networkupstools.org/stable-hcl.html suggests that the SU2200RTXLCD2U
> ought to work via USB.  Tripp-Lite sometimes uses proprietary serial
> cables, so you may need to hunt down a pinout for the serial cable this
> unit requires.  If you need to use a serial connection, I'd start by
> looking at how their PowerAlert software connects to the UPS and then go
> from there to see if you can provide a similar connection to your NUT
> master.
> --Larry
> On Mon, Jul 3, 2017 at 10:38 AM, Ambrogio Coletti <ambrojohn at gmail.com>
> wrote:
>> Hello
>> I asked Tripplite the serial protocol implemented in the UPS model
>> SU2200RTXLCD2U.
>> The protocol is the 4006, which is not supported by the NUT.
>> I connected my UPS unit to a serial terminal client (both from a Windows
>> machine and a Linux machine), set the communication parameters to those
>> indicated in the protocol spec, and tried to open the communication,
>> unfortunately with no success.
>> I couldn't get much support from Tripplite. They couldn't even tell me if
>> I should expect to be able to connect that way an see any type of "welcome
>> message" as the device communication is open.
>> So I am asking you guys, do you know if I am supposed to be able to open
>> a straight serial connection with the UPS as described above, using a
>> normal serial terminal cliente (e.g. Putty)?
>> Regards
>> Ambrogio
>> _______________________________________________
>> Nut-upsuser mailing list
>> Nut-upsuser at lists.alioth.debian.org
>> http://lists.alioth.debian.org/cgi-bin/mailman/listinfo/nut-upsuser
> --
> Larry Fahnoe, Fahnoe Technology Consulting, fahnoe at FahnoeTech.com
>            Minneapolis, Minnesota       www.FahnoeTech.com
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