         _____ _                   _____  _____          _____          
        / ____(_)_            _   / ____|/ ____|   /\   |  __ \   /\    
       | |     _| |_ ___  ___| |_| (___ | |       /  \  | |  | | /  \   
       | |    | | __/ _ \/ __| __|\___ \| |      / /\ \ | |  | |/ /\ \  
       | |____| | ||  __/ (__| |_ ____) | |____ / ____ \| |__| / ____ \ 
        \_____|_|\__\___|\___|\__|_____/ \_____/_/    \_\_____/_/    \_\
 
                           

>>>NOTE

The PSDIRECT Driver is the "frontend" half of a frontend  / backend pair this revision history refers
 to changes to the Backend polling program only

PSDIRECT Siemens Ethernet Backend v7.9.51.010
=============================================
Date:		12/12/2006
Changes:	added demo mode timeouts for OEM & CIP keys
modified file:	SIXSPOLL.EXE


PSDIRECT Siemens Ethernet Backend v7.9.51.009
=============================================
Date:		12/12/2006
Bugs:		Fixed problem writing to TI Loop setpoints
modified file:	SIXSPOLL.EXE

PSDIRECT Siemens Ethernet Backend v7.9.51.008
=============================================
Date:		24/11/2006
Bugs:		none
Changes:	Increased number of PLC connections from 128 to 196
modified file:	IEISOAPI.DLL

PSDIRECT Siemens Ethernet Backend v7.9.51.007
=============================================
Date:		09/11/2006
Bugs:		compiler issue with DWRD Signal conditioning, resulting in bad LONG data in citect on S5 PLC (PSDIRECT3)
modified file:	SIXSTSR.DLL


PSDIRECT Siemens Ethernet Backend v7.9.51.006
=============================================
Date:		06/09/2006
Bugs:		Import variables - Fixed BYTE type & support arrays
		Backup IP address - added a check box to enable / disable
		Protocol - Removed ISO Disconnect message from TCP/IP mode
		

Changes:	modified file SIXDIDW.EXE, IEISOAPI.DLL


PSDIRECT Siemens Ethernet Backend v7.9.51.005
=============================================
Date:		28/06/2006
Bugs:		The backup IP address was being truncated to 12 characters
		eg. "176.16.200.190" to "176.16.200.1"

Changes:	modified file SIXDIDW.EXE
		



PSDIRECT Siemens Ethernet Backend v7.9.51.004
=============================================
Date:		25/05/2006
Bugs:		Changes to the way, the Backup IP address is used to make changeover smoother & faster

Changes:	Changes to both SIXSPOLL.EXE & TCP_IEISOAPI.DLL
		

Comment:	Users who do not used the backend redundancy level will not notice any changes,  These 
		issues relate to Support case CSR179504


PSDIRECT Siemens Ethernet Backend v7.9.51.003
=============================================
Date:		19/04/2006
Bugs:		None

Changes:	- changes to the file SIXSTSR.DLL
		

Comment:	The user will not notice any difference

PSDIRECT Siemens Ethernet Backend v7.9.51.002
=============================================
Date:		12/04/2006
Bugs:		GPF during the Import tag database function, although non essential has been fixed

Changes:	- some changes to TCP/IP connection status reporting to improve backup redundancy failover
		- backup TCP/IP address changover is faster
		- Minor Bug fixed erroneous comms error on ST poll block

Comment:	these changes are considdered minor


PSDIRECT Siemens Ethernet Backend v7.9.51.001
=============================================
Date:		09/02/2006
Bugs:		Bug 30361 Driver is logging huge amounts to the file H1_log.TXT

Comment:	This the a Debugging feature not for release - simply removed the debugging log


PSDIRECT Siemens Ethernet Backend v7.9.51
=========================================
Date:		02/02/2006
Bugs:		Configurator now runs on Win 2003 Server this solves CSR174266

Improvements:	Added support for S7-200 PLC's via Ethernet 
		Added redundancy at the Backend level - on request for the big airport job in china
		Installs Start menu items in citect\CITECTSCADA



PSDIRECT Siemens Ethernet Backend v7.9.50
=========================================
Date:		07/12/2005
Bugs:		Includes bug fix reported in CSR146685 | BUG29981 - 
		Display data corrupted when BackEnd poll block is larger than the actual PLC data block

Improvements:	Compiled with VC8 
		Added support for Siemens S7 "STRING" Datatype 
		Improved database import for S5 addresses
 





