Support for MicroLink APC UPSs

[EetuRasilainen]

Hi there,

as you know APC is still manufacturing MicroLink-only UPSs. I have purchased a APC SMC1000I and just found out that it could only be used as a generic USB-HID UPS with NUT right now. And unfortunately the SMC-series is not capable of ModBus so there are still APC devices out there which can only use MicroLink for a full operation.

So I think it would be great if MicroLink-UPSs could be supported directly by NUT at least through a serial connection. That's why I'd like to raise this feature request here.

For testing purposes I have created a custom serial cable with this pinout and used the following Python tool for checking the MicroLink communication with my unit:

https://github.com/klaasdc/apcups-serial-test

I was able to get information about my unit and even set the battery installation date through MicroLink in a Python shell (with the help of some sample code). So it seems like the protocol description is there, it's just written in Python and needs to be ported to C. Unfortunately I am only familiar with Python and not with C :(

[jimklimov]

Cross-posted to nut-upsdev mailing list, hoping someone would pick up the challenge.

…

On Fri, May 13, 2022, 20:35 EetuRasilainen ***@***.***> wrote: Hi there, as you know APC is still manufacturing MicroLink-only UPSs. I have purchased a APC SMC1000I and just found out that it could only be used as a generic USB-HID UPS with NUT right now. And unfortunately the SMC-series is not capable of ModBus so there are still APC devices out there which can only use MicroLink for a full operation. So I think it would be great if MicroLink-UPSs could be supported directly by NUT at least through a serial connection. That's why I'd like to raise this *feature request* here. For testing purposes I have created a custom serial cable with this pinout <https://pinoutguide.com/UPS/apc_0625_cable_pinout.shtml> and used the following Python tool for checking the MicroLink communication with my unit: https://github.com/klaasdc/apcups-serial-test I was able to get information about my unit and even set the battery installation date through MicroLink in a Python shell (with the help of some sample code <klaasdc/apcups-serial-test#1>). So it seems like the protocol description is there, it's just written in Python and needs to be ported to C. Unfortunately I am only familiar with Python and not with C :( — Reply to this email directly, view it on GitHub <#1426>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AAMPTFB5XN5AUZJRQOI7OCTVJ2OHLANCNFSM5V4E7ROQ> . You are receiving this because you are subscribed to this thread.Message ID: ***@***.***>

[andy25225]

Hello,

I have an SMC100i-2uc here.
Modbus is available on it. I think you might just need to upgrade your firmware to at least 15.5, and then enable it.
Look for the "cP" (Communication Protocol) option on the device menu and ensure it is set to 1.