[Apcupsd-users] modbus commlost (can't connect via usb or serial)

Ted Mittelstaedt

2016-12-25 16:45:00 UTC

Maybe the debian admins did not include the modbus module when they
built it?

Ted

Thanks,
I did the upgrade, only to find that it was already the most current
9.3. And that modbus support should work for firmware 9.1 and higher.
My only other idea is to compile apcupsd from source, but I was hoping
Debian already did that properly (it's already 3.14.14).

Post by Ted Mittelstaedt
Run this
http://www.apc.com/us/en/faqs/content/?id=FA281865
make sure your firmware is current
Ted

I recently purchased an SMT1500 UPS and I'm having problems getting
modbus working.
I'm running Debian using apcupsd 3.14.14
My UPS is an SMT1500 with firmware 09.3 / ID=18
(http://www.apc.com/shop/us/en/products/APC-Smart-UPS-1500VA-LCD-120V/P-SMT1500)
I've enabled modbus on the SMT's front panel (using the advanced menu)
and the "Modbus Address" is "1"
My config is...

UPSCABLE usb
UPSTYPE modbus
DEVICE
LOCKFILE /var/lock
UPSCLASS standalone
UPSMODE disable

I've also tried specifying the serial number...

UPSTYPE modbus 3S1637X09876

I've tried both the usb and serial cable and can get communications
working with UPSTYPE usb & apcsmart. But when trying modbus for either
serial or usb, all I get is status COMMLOST.

APC : 001,017,0427
DATE : 2016-12-20 21:31:24 -0500
HOSTNAME : dualquad
VERSION : 3.14.14 (31 May 2016) debian
CABLE : USB Cable
DRIVER : MODBUS UPS Driver
UPSMODE : Stand Alone
STARTTIME: 2016-12-20 21:31:22 -0500
STATUS : COMMLOST
MBATTCHG : 5 Percent
MINTIMEL : 10 Minutes
MAXTIME : 0 Seconds
NUMXFERS : 0
TONBATT : 0 Seconds
CUMONBATT: 0 Seconds
XOFFBATT : N/A
STATFLAG : 0x05000100
END APC : 2016-12-20 21:31:24 -0500

apctest returns the following...

2016-12-20 21:37:14 apctest 3.14.14 (31 May 2016) debian
Checking configuration ...
sharenet.type = Network & ShareUPS Disabled
cable.type = USB Cable
mode.type = MODBUS UPS Driver
Setting up the port ...
0.000 apcupsd: ModbusRs232Comm.cpp:71 Open: open("") fails: No such
file or directory
apctest FATAL ERROR in apctest.c at line 321
Unable to open UPS device.
If apcupsd or apctest is already running,
please stop it and run this program again.
apctest error termination completed

I'm lost at what else to try. I'd like to be able to get the line
voltages (LINEV) and load percentages (LOADPCT), but assume this is
only
available via modbus. They are not reported in usb or apcsmart mode.
The closet issue I could find on the list is here
https://sourceforge.net/p/apcupsd/mailman/message/34852904/ But I
don't
see a solution.
Any help or pointers is appreciated. Thanks,
Mario
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_______________________________________________
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