APC is starting to support the open modbus protocol over USB in their Smart-UPS line. In the newest devices, modbus provides much more data than the proprietary protocol that the USB interface uses by default in apcupsd. I think as more users start purchasing these modbus-enabled APC devices, this feature will be a very helpful addition to unRAID.

 

In order to support this new protocol, apcupsd needs to be built with the './configure --modbus-usb' flag. The binary in unRAID as of version 6.1.9 does not appear to have been built with this flag.

 

I'd like to request that this be included in future versions of unRAID.

 

Thanks!

BUMP.....  YES! Would very much like to see it added so USB modbus functions properly.

BUMP here as well. ^^

For those interested, I created a slackbuild for unRAID that includes the --modbus-usb flag. You can put it in /boot/extra and it will overwrite the LT-supplied binary at boot, providing modbus support and upgrading to the latest apcupsd 3.14.14

 

http://alpineapiaries.com/hosted_files/apcupsd-3.14.14-x86_64-1.txz

Edited October 26, 20196 yr by highspeed

I just rebooted with the package I just built as well, wish I checked in earlier I wouldn't have had to spawn a VM. 

I wanted to have cgi disabled anyway so it's not lost.

I wanted to confirm that modbus is now supported as of unRAID 6.3.1. They also bumped the build to the latest 3.14.14. Thanks, Lime-Tech!

On 2017-1-6 at 10:21 PM, highspeed said:

For those interested, I created a slackbuild for unRAID that includes the --modbus-usb flag. You can put it in /boot/extra and it will overwrite the LT-supplied binary at boot, providing modbus support and upgrading to the latest apcupsd 3.14.14

 

https://dl.dropboxusercontent.com/u/83284/apcupsd-3.14.14-x86_64-1.txz

Think the file is missing, and it sounds like this is exactly what I need to get Modbus operational. is this still available somewhere?

@Zangief did you get it working ?

I managed to get my network card working (following excellent instructions from another limetech user) so have stuck with that. I havent tried to go back to USB MODBUS...

Did anyone ever get USB MODBUS working?

Got it working.  Didn't know I had to enable MODBUS from the front panel(you can't do it from the management card)