Version history file for 2014 released power supply series PS 9000 1U / 2U / 3U

Meaning of the symbols:
+ Feature added
- Feature or bug removed (general bug fixes are not listed to have a better overview)
* Feature changed

Note: according to the block diagram in the manual, these devices have three microprocessor controlled components which have separate firmwares. 
They are listed below in separate sections.

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Component KE:
v2.01
* First KE firmware release
v2.03
* Improved the USB SCPI/ModBus communication
v2.04
+ Remote activation/deactivation of the communication protocols
v2.06
+ Remotely adjustable Ethernet timeout
v2.07
+ Improved analog interface sample rate to 500 Hz
v3.01
+ Added keep-alive functionality for the Ethernet port (register 10007 resp. SCPI command SYSTem:COMMunicate:LAN:KEEPalive)
v3.04
- Fixed but related to SCPI command SOURce:POWer MAX

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Component KE for GPIB models:
v2.02
- Fixed bug with command SYST:LOCK over GPIB where it was not executed as expected
v2.03
- Some small bug fixes
v2.04
- Settings storage problem fixed
+ Alarm Power Fail (PF) indicated along with OverTemperature (OT) on pin 6 of analog interface
- GPIB address: Fixed bug where the address could be set to 31 via USB command
- SCPI: removed some CAN interface related commands from list of supported commands
* Improved performance on GPIB

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Component HMI:
v2.01
* First HMI firmware release for PS 9000 2U/3U models 
v2.02
+ Alarm history menu, "Analog interface Rem-SB" and "Analog Rem-SB action" settings
* Improved device calibration
v2.03
+ "DC output after PF alarm", manual or remote activation/deactivation of the communication protocols, USB timeout settings, 
- Voltage controller speed setting
* "General-Settings" arrangement
v2.04
+ Manually adjustable Ethernet timeout, HMI PIN lock, user text now displayed on "About HW, SW" screen

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Component DR:
v1.0.15
* First DR firmware release
v1.0.16
* Improved the supervision functions, measurement functions
v1.0.17
* Improved the supervision functions
v1.0.18
* Improved device calibration and the supervision functions
v1.0.21
* Bugfix: Power fail alarms were not displayed after the start of the device and when being already present during the start