#########    C H A N G E  -  L O G    ############
Build 4.2.0.1
- dynamic time out for initialisation of OPC items
  (time out per OPC item)
- opcIor    => shows state of initialisation
- opcIor i  => shows unitialized variables
- opcIor filters are case insensitive
- opcIor starts in own thread to avoid freezing IOC shell communications

Build 4.2.0.0
- Added support of communication with Programmable Logic Controllers (PLCs)
  via the Modbus protocol over TCP, serial RTU, and serial ASCII links
  (https://github.com/epics-modules/modbus V2-9 
   https://github.com/epics-modules/asyn V4-34)

Build 4.1.0.6
- Start OPC server before adding groups and items
Build 4.1.0.4
- EPICS BASE is now 3.14.12.8
- Support for ai/ao converting
- Support for bo record field HIGH (seconds to hold high)

Build 4.1.0.3 (28.04.2018)
- Bugfix for OPC data type R8

Build 4.1.0.2 (27.02.2018)
- EPICS BASE is now 3.14.12.7
- OPC commands can be redirected to file now
- Support of field AOFF for debugging
- opcIor got filters
- New OpcGroupList function to count PVs per group

Build 4.1.0.1 (09.12.2016)
- Starting from this version, waveform records are supported again
- All PVs (connected to OPC server) will be initialized from server at start

Build 4.0.0.2 (04.07.2016)
MAJOR UPDATE
- Solved issue: "opcSetScalar-error"
- EPICS BASE is now 3.14.12.5
- New OPC client library with DA v3.00 support
  (Softing OPC Classical Toolkit V4.41)
- Configuration changed
  Now you can use long OPC variable names directly
- Duplicate parsing (OPC parser + EPICS parser) of OPC variables is omitted
  (faster start and better EPICS compatibility)
WARNING: waveform records are not supported in this version
- opcDbg removed
- asWriteLog removed

Build 3.8.0.0 (14.02.2011)
MAJOR UPDATE
- EPICS BASE is now 3.14.12
- Exception in Com.dll fixed

Build 3.7.0.3 (06.11.2010)
MAJOR UPDATE
- EPICS BASE is now 3.14.11

Build 3.7.0.2 (06.11.2009)
MAJOR UPDATE
- EPICS BASE is now 3.14.10
- Detection of interrupted connection of OPC server added
- Includes all known bugfixes of EPICS BASE (November 2009)
- Compiled with Visual Studio 2010 (ready for Windows 7)

Changed DEMO (25.8.2009)
- Setup for OPC simulator has been included in application setup now
  (needed for DEMO configuration only)
- IocShell has not been changed!!!
"BESSY mbH" is "Helmholtz-Zentrum Berlin für Materialien und Energie GmbH" now

Build 3.6.0.0 (10.9.2007)
MAJOR UPDATE
- EPICS BASE is now 3.14.9
- Includes bugfixes of EPICS BASE up to #298

Build 3.5.4.3 (9.3.2007)
- several internal code changes and exception handling
- waiting 10 seconds for safe start of OPC server
    (solved problems with more than 1000 OPC variables)

Build 3.5.3.54 (28.2.2007)
- Removed waiting for OPC groups
- Added selfchecking of uninitialized OPC variables
    and read them back if necessary
- fixed problems with waveform records (evaluation of FTVL-field)
- Added opcDbg("-2") to manually check uninitialized OPC variables
- Added opcDbg("0x200", "filter") to show process of making instances of OPC variables
    Useful to check which OPC variables are active in EPICS
- Added opcDbg("0x400", "filter") to list known OPC-variables at IOC-shell
    Useful to check which OPC variables are known in EPICS
- Added filter in opcDbg for instance/read/write OPC variables
    Only variables which are matching filter will be shown (simple substring comparison)

Build 3.5.2.2 (6.2.2007)
------------------------------------------------------------
- iocShell waits until all OPC groups are initialised
- OPC communication is now synchronized by OPC driver


Build 3.5.2.1 (1.2.2007)
------------------------------------------------------------
- OPC driver supports waveform records now
- Added opcDbg("-1") to show available local OPC servers
    and browse connected OPC servers for available OPC-items
- Added "opcEnum-service" to setup (OPC-Server-Lookup)