Thursday, January 3, 2019

Expanded "Hover Help"

The FBDK is now capable of including "Hover Help" for internal variables, LD rungs, Service sequences and primitives in generated HTML documents in addition to its previous capabilities. See the expanded examples at the FBNavigator home page and the updated instructions at

Tuesday, December 18, 2018

FBDK 8.0 Release

Release 8.0 of the FBDK/FBRT is now available at (the numbering is to emphasize that it requires JDK 8 or higher).
Please be sure to read for a description of several new and useful features (and one important caveat).

Friday, November 2, 2018

Network Setup for FBDK+FBRT

A new set of guidelines is available for setting up network and firewall parameters for ease of launching distributed systems and remote devices with the FBDK and FBRT:

Tuesday, August 21, 2018

FBDK 3.3 Release

In addition to clickable documentation links, the FBDK now generates hoverable pop-up documentation (derived from comments in the XML document) for graphical elements in the PNG diagrams produced using the "Save as HTML" function. For a user-oriented overview, see the FBNavigator home page, and for instructions on producing the HTML documentation, see

If you are already using FBDK 3.2, this update will auto-load at startup; otherwise, you can follow the instructions at

Sunday, July 15, 2018

Security Upgrade and FBDK 3.2 release

The website has been upgraded to use the HTTPS (secure HTTP) protocol for all served documents.

This has required an extensive update to the FBDK to convert its use of HTTP to HTTPS for auto updates, help pages, etc.

For additional details of new features in FBDK 3.2 see

Friday, January 26, 2018

FBDK 3.0 Release

FBDK 3.0 is now available at New features include:
  1. The FBDK and FBRT now support the following experimental features:
  2. Validation tools are provided for ECCs and FB Types to guide development and prevent compilation of incorrect or incomplete elements.
  3. The progress bar has been relocated to the upper right corner of the Library Navigator and its operation has been properly synchronized to the running background process.

Saturday, April 8, 2017

FBDK 2.6 Version 20170408

If you have used the FBDK recently, you may have noticed an unannounced auto-upgrade to Release 2.6 version 20170314. Further testing revealed a few glitches, which have now been fixed. Changes from the 2.5 release include:

  1. Look and Feel (LAF) has been set to the Java "Metal" default, to ensure uniform window appearance and sizing across platforms.
  2. An experimental, more efficient encoding of device management commands and responses is available by specifying the fbmgt2 protocol in the MGR_ID parameter of the remote device. See the mgt2 and mach folders of the FBNavigator for details and examples.
  3. The System and Device launchers have been re-implemented to support multiple management protocols. In particular, the System launcher now starts each device as soon as it is created and initialized, instead of waiting to launch the devices in reverse order. This mainly affects the delays required to start simulation and diagnostic clocks in the system configurations of the mach folder. 
Documentation in the FBNavigator is being updated to reflect these changes; updating should be complete in a week or so.