Show pagesourceOld revisionsBacklinksBack to top × Table of Contents APC SmartUps SU-700 - Linksys EA3500 - LuCI graphs Saving the data across Reboots Troubleshooting APC SmartUps SU-700 - Linksys EA3500 - LuCI graphs This describes how to connect an APC SmartUps SU-700 via USB on a Linksys EA3500 router. This includes collecting the data, and displaying graphs. Plug in UPS Connect a 940-0024 serial cable to the UPS (I'm using a 940-0024c. Other 'smart' cables may work as well. See: http://www.apcupsd.org/manual/manual.html#cables) Connect other end of the cable to a serial-to-usb converter Some converters work, some don't. A cable from eBay called “USB to RS232 Serial 9 Pin DB9 PIN PL2303 Cable Adapter” did not end up working for me, due to Linux driver issues. I ended up using a https://www.iogear.com/product/GUC232A. Connect the serial-to-usb converter to the router USB port (or a USB hub, if you need multiple things plugged into the port). In the router command line or LuCI web pages, install packages: apcupsd, collectd-mod-apcups, and kmod-usb-serial-pl2303 For the command line, the commands are:opkg update opkg install kmod-usb-serial-pl2303 opkg install apcupsd opkg install collectd-mod-apcups On the router command line, verify that the USB driver is installed and working with command and response:# ls -la /dev/ttyUSB* crw------- 1 root root 188, 0 Dec 1 00:29 /dev/ttyUSB0 If you don't see a serial port then something is wrong with the driver for the serial-to-usb converter. Resolve this, before proceeding. The next step is to customize the apcupsd config file. Details of the options can be found at http://www.apcupsd.org/manual/manual.html , in the section “Configuration Directive Reference”. On the router command line, go to the /etc/apcupsd directory, and edit the config file:# cd /etc/apcupsd # vi apcupsd.conf use the dd command to delete all the lines in the file use the i command to set the VI editor into “insert” mode. Copy and paste this text into the editor:## apcupsd.conf v1.1 ## UPSNAME APC700 UPSCABLE smart UPSTYPE apcsmart DEVICE /dev/ttyUSB0 LOCKFILE /var/lock ONBATTERYDELAY 6 BATTERYLEVEL 5 MINUTES 3 TIMEOUT 0 ANNOY 300 ANNOYDELAY 60 NOLOGON disable KILLDELAY 0 NETSERVER on NISIP 0.0.0.0 NISPORT 3551 EVENTSFILE /var/log/apcupsd.events # max kilobytes EVENTSFILEMAX 10 UPSCLASS standalone UPSMODE disable # ===== Configuration statements to control apcupsd system logging ======== # Time interval in seconds between writing the STATUS file; 0 disables STATTIME 0 # Location of STATUS file (written to only if STATTIME is non-zero) STATFILE /var/log/apcupsd.status LOGSTATS off # Time interval in seconds between writing the DATA records to # the log file. 0 disables. DATATIME 0 type :wq into the editor, to write the new apcupsd.conf, and quit the edit session restart the apcupsd deamon process: # /etc/init.d apcupsd restart Enter the apcaccess command into the command line, and you should get output like this: # apcaccess APC : 001,034,0829 DATE : 2017-12-01 18:11:01 -0700 HOSTNAME : myrouter VERSION : 3.14.14 (31 May 2016) unknown UPSNAME : APC700 CABLE : Custom Cable Smart DRIVER : APC Smart UPS (any) UPSMODE : Stand Alone STARTTIME: 2017-12-01 18:10:11 -0700 MODEL : Smart-UPS 700 RM STATUS : ONLINE ... Note the STATUS : ONLINE . If you don't have “ONLINE”, then something is wrong Reboot the router. In the router web interface, go to Statistics, Graphs, APC UPS You should see the graphs, with data starting on the right side. If not, wait a minute, refresh your browser and you should start to see data being written. Saving the data across Reboots By default the collected data will be lost after a reboot of the router. To save the data, you need to put it on an external device, like a USB flash drive. Connecting both the UPS and a flash drive to a USB hub, which is then connected to the router, works fine for me. To put the data on an external device, go to Statistics / Setup / Output plugins / RRDTool (http://192.168.1.1/cgi-bin/luci/admin/statistics/collectd/output/rrdtool), and change the Storage directory to wherever you want to store your data. Troubleshooting If you don't have APC UPS graphs at this point, here are some things to check: Change the data collection interval to 10 seconds. This is a workaround for the issue reported in: https://github.com/collectd/collectd/issues/617. Go to Statistics / Setup / Change the Data collection interval to 10 seconds Verify that serial communication to the UPS is working - On a PC attach usb converter to PC startup minicom (or equivalent): minicom -D /dev/ttyUSB0 ctrl-a, ctrl-z, P, change port configuration to 2400,8,n,1 ctrl-a, ctrl-z, O, Serial Port Setup change port configuration to hardware / software flow control: none type the uppercase letter: Y , and expect the reply SMY SM Note: serial APC UPS commands are documented at: http://networkupstools.org/protocols/apcsmart.html ) Verify that serial communication to the UPS is working - On the Router Detach the usb converter from PC , attach to router Install minicom on the router. Use the same minicom commands to verify communication with the router. type the uppercase letter: Y , and expect the reply SMY SM There should be a tab for APC UPS on the General Plugins page at:http://192.168.1.1/cgi-bin/luci/admin/statistics/collectd/general If not, you may not have the patches that added luci-statistics support for the apcups plugin: https://github.com/openwrt/luci/pull/1227. The best fix for this is to upgrade to a version that does. /var/etc/collectd.conf should have a section for apcups:LoadPlugin apcups <Plugin apcups> Host localhost Port "3551" </Plugin> If it does not, you can regenerate /var/etc/collectd.conf with this command: /usr/bin/stat-genconfig > /var/etc/collectd.conf If you still don't have APC UPS graphs, you may not have the patches that added luci-statistics support for the apcups plugin: https://github.com/openwrt/luci/pull/1227. The best fix for this is to upgrade to a version that does. This website uses cookies. 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