The CNS Clock
Tac32Plus
The Totally Accurate Clock (32-bit)
plus the Time Interval Counter Module (TIC)
For additional information, contact info@cnssys.com.
 Tac32Plus Software
CNS Clock
and
Tac32Plus
Software:		 CNS Systems produces the CNS Clock and the CNS Clock II. For more information about CNS Systems' products go to the CNS Systems main page.
For more information on Tac32Plus software go to the Tac32Plus Software page.
Ordering information and prices
Install Tac32Plus Now! Install Tac32Plus directly from the Web: This installation method uses InstallFromTheWeb technology, which provides you with the fastest download and error recovery. Click the Install button at left to install the latest version of Tac32Plus. Windows NT/2000/XP/2003 users must be logged on as the administrator.
Download self-extacting installation file Install Tac32Plus locally: Download the Tac32Plus installation file Tac32PlusS.exe by clicking the icon to the left then execute the file on your computer.
Download self-extacting installation file USB Drivers for the CNS Clock II: Uncompress this library file to a temporary location and use one of the newly created directories to load the USB driver when Windows detects new hardware or use with the update driver function to change to the latest USB driver. The directory "USB Driver" supports Windows Server 2008, Windows Server 2008 x64, Windows Vista, Windows Vista x64, Windows XP, Windows XP x64, Windows 2000, Windows Server 2003, and Windows Server 2003 x64. The directory "USB Driver Old - Win 98 and ME" supports Windows 98 and Windows ME.
Ethernet Discoverer Ethernet Discoverer: This utility can help find a CNS Clock II when you don't know the current IP address of the clock. It listens to port 30303 for an information packet containing the CNS Clock II's current NetBIOS hostname, MAC and IP addresses. Just run the executable "Ethernet Discoverer.exe" and you will see a windows screen. Press the "Discover Devices" button to solicit a response from the CNS Clock II. Otherwise you will see an unsolicitited response on power up or on configuration change.
Download the manual The Documentation for Tac32Plus and the CNS Clock II is available in Adobe format. To download right click on the button to the left and choose to save the target as a file.
Download the manual The Documentation for Tac32Plus and the original CNS Clock is available in Adobe format. To download right click on the button to the left and choose to save the target as a file.
Download the manual The TIC Documentation for Tac32Plus is available in Adobe format. To download right click on the button to the left and choose to save the target as a file.
Get Acrobat Reader The Tac32Plus documentation files require Adobe Acrobat reader version 8.0 or newer. The reader can be installed as a plug-in for use within your Web browser.

Latest
Version:
2.7.8

 Version 2.7.8, Jul 26, 2009

Enhancements:

  • Implement support for the u-blox LEA-5T.

Corrections:

  • Some serial port controllers would not work with the Time Interval Counter. This is fixed.
  • Some serial port drivers produced faulty outputs for the 1PPS signal control lines. This is now managed correctly if it occurs.
  • Spell out "Motorola" instead of using "Mot" (e.g., "Motorola Binary" replaces "Mot Bin".
  • Improved the efficiency of processing certain Motorola Binary messages.
  • Eliminate intermittent exception when closing the program.

Version:
2.7.7

 Version 2.7.7, May 08, 2009

Corrections:

  • A configuration management error prevented the fix that allows use of any baud rate for any receiver from 2.7.6 to function on some variations of the software. This is now fixed.

Version:
2.7.6

 Version 2.7.6, Jul 22, 2008

Enhancements:

  • Merge Tac32Multi into Tac32Plus
  • Updated the CMC hardware-software identification message (#45) decoder to reflect more recent message data specification and to display more information.
  • Allow use of any baud rate for any receiver. New models of some receivers are implementing new data rates.

Corrections:

  • Correctly display PRN32 on the Satellite Az-El Chart.
  • Fixed a memory leak.

Version:
2.7.5

 Version 2.7.5, Nov 11, 2007

Enhancements:

  • Recognize the iLotus built M12M based on the new SiRF copyright notice.

Corrections:

  • Change the "Bad Almanac" message to "Cold Start or Bad Almanac" for the M12 series receivers.

Version
2.7.4

 Version 2.7.4, Aug 23, 2007

Enhancements:

  • Added 100PPS support for the CNS Clock II. The CNS Clock II is unique in that it provides a precision 1PPS even when in 100PPS mode so that normal operations can continue in 100PPS mode.

Corrections:

  • Correctly identify the new iLotus M12M receiver modules. These modules are designed by Motorola but built by iLotus.
  • Added interim support for the SIGNAV TM3-1 receiver which is intended to be a Motorola M12 Timing receiver clone.
  • CMC (Marconi) message receive was broken in Version 2.7.3 when converting to unicode and is now fixed.
  • The CMC receiver's DGPS Status message was being derived from the wrong message thus giving false indications. Also, the CMC DGPS status tells if DGPS is enabled, not if it is being received, so the display message was changed.
  • In decoding the CMC message 33 it was found that the satellite table was incompletely cleared resulting in unused satellites remaining on the screen and occasionally even showing duplicate satellites. This is now fixed.
  • Identify CMC Allstar and Superstar receivers separately. Improve CMC receiver initialization, especially disabling undesired messages so that the Superstar correctly displays its data on TAC32's screens.
  • Fix the default size of the main window for first time users.

Versions
2.0 - 2.7.3
1.0 - 1.2.8

 For earlier release notes click on the Version 1 or 2 aircraft icons below.
Go to the Version 2 release notes archive

Go to the Version 1 release notes archive

Fly off to the Release Notes pages

The release notes archive is on separate pages.
Click on the airplanes to get there.