Flintec LDU 69.1 - Manual (Page 27)

LDU 69.1 Technisches Handbuch, Rev. 12 January 2011 Page 27 of 28
10. Updates – Firmware Download
For a software update the LDU xx.x amplifier has to be connected with a Windows PC via the serial interface
(4-wire connection; RS485/RS422 respective RS485/RS232 converter). The solder pads SW4 on the bottom
side of the PCB must be closed before switching on. After the download the solder pads must be opened again.
A download is accomplished with help of our program “PROG78”.
Firmware update for LDU xx.x series:
First all necessary files (LduDownload.exe, progXX.a20, lduXX.a20) have to be stored in same directory. The
firmware for LDU 69.1 is stored in file lduXX.a20.
Close the solder pads SW 4 on the under side of PCB.
 LDU XX.X is de-energized
 Close solder pads SW4 on the bottom side (see chapter 5.1)
 Switch on LDU xx.x
 Start program “LduDownload”.
 Press button “Load” and choose file ”lduXX.a20”.
 Press button “Program”.
 At message “Reset LDU before proceeding” switch the LDU XX.X off and on again and press the button
“OK”.
 Download proceeds. – The end will be indicated with ”Programming OK “.
 Switch off LDU XX.X .
 Open solder pads SW 4
 Now use a terminal program or DOP software for running a factory reset of the LDU XX.X by using the
command FD
Note: The command FD is TAC protected. You must issue the CE command with relevant TAC code prior to
the FD command else the FD command will fail.
FD Reset to Factory Default Settings
This command puts the LDU back to a known state. The data will be written to the EEPROM and the TAC will
be incremented by 1.
Note: All calibration and setup information will be lost by issuing this command!
Master (PC / SPS) sends Slave (LDU XX.X) responds Meaning
CE
 E+00017
(example) Request: TAC counter CE17
CE 17  OK Calibration sequence active
FD 0
 OK Factory default setting