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UPS Monitor for OS/2

UPS Monitor is a utility program to monitor and log power line and battery status for a large number of Uninterruptible Power Sources (UPS). It shuts down OS/2 or eComStation safely by time or low battery signal. Fully supports UPS parameter settings, diagnostics and parameter measurements for models that support these options. Individual program versions are available and are optimized for each UPS interface type to keep computer resource usage to a minimum.

UPS Monitor works with RS-232 communications ports only. USB is not supported.

Here are some features of the UPS Monitor programs:

  • Supports smart signaling APC Back-UPS Pro, Smart-UPS and Matrix-UPS models.

  • Supports smart signaling for Opti-UPS Enhanced Series and PowerES series.

  • Supports smart signaling Powerware 5125 UPS.

  • B version supports simple signaling (APC Back-UPS, Back-UPS Office and Back-UPS ES series) models.

  • C version supports contact closure models from Tripplite, IBM and others.

  • Monitors power and shuts down operating system when battery is low.

  • Performs event logging for all models.

  • Performs event scripts for Line Power On/Off or Battery low.

  • Supports internal, external and XWorkplace Extended Shutdown.

  • Support for UPS status display on XCenter or any other external program.

  • Allows manual Shutdown Now with APM shutdown option.

  • Performs parameter measurement and logging on Back-UPS Pro, Smart-UPS and Opti-UPS models.

  • Adjusts UPS parameters if UPS model supports it.

  • Supports APC smart signaling cables 940-0095A (plug and play), 940-0024B or 940-0024C.

  • Supports Opti-UPS plug and play cable.

  • Uses cable provided by manufacturer.


Screen shot of UPS Monitor and two settings windows.
To view full size, save picture to disk and open with a picture viewer.



Read what OS/2 eZine had to say about UPS Monitor for OS/2.

Read the UPS Monitor FAQ here.



Download UPS Monitor.

UPSMON2.ZIP - (size 0.6MB) UPS Monitor ver 1.4 - Freeware. Supports APC models Back-UPS Pro, Smart-UPS and other APC smart signaling UPS. Download this version if your UPS came with cable number 940-0095A or B (plug and play), 940-0024B or 940-0024C. The cable number can be found on one of the connector ends.

Note: Back-UPS Pro 1000 and 1400 appear not to have smart signaling interfaces. Check with manufacturer if in doubt if model has a smart or simple interface. UPS Monitor B below will work for these two models.

Latest version posted: March 7, 2008

Download UPSMON2.ZIP from Hobbes



Download UPS Monitor for Opti-UPS.

UPSMOP10.ZIP - (size 0.6MB) UPS Monitor for Opti-UPS ver 1.0 – Freeware.

Supports OPTI-UPS PowerES series models (now discontinued).

Latest version posted: February 22, 2008

Download UPSMOP10.ZIP from Hobbes



UPSOPT11.ZIP - (size 0.6MB) UPS Monitor for Opti-UPS ES ver 1.1 – Freeware.

Supports OPTI-UPS Enhanced Series models. Currently available.

Latest version posted: March 19, 2008

Download UPSOPT11.ZIP from Hobbes



Download UPS Monitor for Powerware 5125 UPS.

UPSMPW10.ZIP - (size 0.6MB) UPS Monitor for Powerware 5125 UPS ver 1.0 – Freeware.

Supports Powerware UPS model 5125. Currently available.

Latest version posted: February 22, 2008

Download UPSMPW10.ZIP from Hobbes



Download UPS Monitor Daemon.

UPSDMN10.ZIP - (size 0.2MB) UPS Daemon ver 1.0 - Freeware. New generation UPS Monitor supporting contact closure type UPS made by APC, Belkin, Tripplite, IBM and more. This is a small VIO program that monitors UPS connected to a serial port, logs power events and performs a graceful shutdown of the operating system.

Latest version posted: January 7, 2005

Download UPSDMN10.ZIP from Hobbes



Download UPS Monitor B.

UPSMONB.ZIP - (size 0.5MB) UPS Monitor B ver 1.3 - Freeware. Supports APC models Back-UPS, Back-UPS Office, Back-UPS ES and Back-UPS Pro 1000/1400 simple signaling UPS. Download this version if your UPS came with cable number 940-0020B. The cable number can be found on one of the connector ends.

Latest version posted: February 1, 2004

Download UPSMONB.ZIP from Hobbes



Download UPS Monitor C.

UPSMONC.ZIP - (size 0.5MB) UPS Monitor C ver 1.3 – Freeware. Supports contact closure UPS models by Tripplite, IBM, PK Electronics, Red Line Technology, CyberPower Systems, Belkin and other manufacturers. See below for all models supported.

UPS Monitor C is now tested and verified for the Magnum BI-UPS Power Supply, AAP UPS2 Power Supply and Beam Tech internal UPS models. These products are computer power supplies with integrated UPS which mount directly into your computer. The Beam Tech model is an internal UPS only.

Note: You must start UPS Monitor C with the -BOFF option for these UPS. Cable drawings are included in the Help file.

Latest version posted: February 1, 2004

Download UPSMONC.ZIP from Hobbes



Note 1:

The Tripplite and IBM models have battery on/off control through the serial port. If connecting UPS Monitor C to these UPS's leaves battery turned off, you may have to use the command line option -BOFF to leave battery turned on. See Help - Command Line Options inside UPS Monitor C for more information.

Other contact closure UPS may also require the -BOFF command line switch. See Help for more details.



UPS Models Tested and Verified:

  • Tripplite INTERNET Office 500, 700

  • IBM Professional Office 500, 700

  • PK Electronics BlackOut Buster

  • Red Line Technology RLBK 500

  • Infosec iUPS 400PRO, 800PRO (Use Red Line cable as shown in UPSMONC Help)

  • CyberPower Systems 320SL, 325SL, 375SL, 500SL, 575SL, 650SL

  • CyberPower Systems 585AVR, 700AVR, 900AVR, 1250AVR

  • Belkin Home Office UPS Models F6H350-SER, F6H500-SER and F6H650-SER

  • Magnum BI-UPS Power Supply models MPS1058-000, MPS1058-010 and MPS1070-200

  • AAP UPS2 All UPS2 Power Supply models

  • Beam Tech Internal UPS models SI-300/500/550/600



UPS Models Untested but Possibly Supported:

Best Power Patriot Series
Deltec PowerRite Series
Exide OneUPS Series
IBM Office Professional 500i, 700i
IBM Office Professional 500AVR, 700AVR
IBM Office Professional 500AVRI, 700AVRI
Liebert PowerSure
MGE EL7
Oneac ON Series
OPTI-UPS PowerVS Series
SL Waber UPStart Series
Tripp Lite Internet Office 350, 525
Tripp Lite BCPRO 1050, 1400
Tripp Lite BCPRO 600, 850
Tripp Lite OMNIPro INT 280, INT 500
Tripp Lite OMNISMART 1050, 1400
Tripp Lite OMNISMART 700HG, 1400HG
Tripp Lite OMNI-SMART INT 1000PNP, 1400 PNP
Tripp Lite OMNISMART 300, 500, 700, 850
Tripp Lite OMNI-SMART INT 500 PNP, 700 PNP
Any others?

Established: April 26, 1997 --- Last updated: March 19, 2008
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