5−4 Electric Drives
and Controls
Bosch Rexroth AG BT 6.00 1070080078 / 03
Maintenance
5.3.2 Load firmware version
In rare cases, it may be necessary to update the BT 6 firmware.
. Firmware updates may only be carried out at the instruction of the
Rexroth service!
All code numbers (cf. page 4−12) will be reset to ”0” by a firmware
update!
For a firmware update, you need
D access to the back of the housing of BT 6,
D a pointed object for operating button S1 (for position, refer to page
3−4),
D a PC with the ”WinBlow” software installed”,
D a suitable connecting cable (BT 6 <−> PC; for pin assignment of X2,
refer to page 3−4) and
D a data carrier (floppy disk, CD) with the corresponding firmware.
L Proceed as follows:
1. Connect a V24 interface of your PC (COM1 or COM2) to X2 on the
BT 6.
2. Ensure power supply to the BT 6.
3. Start the ”WinBlow” software. Select the desired language and the
V24 interface used.
4. Insert the data carrier containing the firmware into your PC. Select
the path and file name of the firmware. Firmware files have the file-
name extension ”.hex”.
5. Click on ”load firmware” command button.
You are prompted to set the bootstrap mode on the unit.
6. Press the recessed key S1 on the back side of the BT 6.
Thus, the unit is switched from operating to bootstrap mode.
This condition is indicated by a recessed LED above key S1.
. If you want to exit the BT 6 bootstrap mode at this point, you have to
interrupt the BT 6 power supply (pull out X1).
When the next step has been initiated, the BT 6 power supply must
not be interrupted until the complete firmware has been loaded!
7. Confirm at the PC that the BT 6 bootstrap mode has been activated.
The firmware is now loaded into BT 6. A bar indicates the current sta-
tus of the process.
8. Wait until the PC signals the end of the transmission.
The message “Timer not responding” is not relevant for the BT 6.
9. Interrupt the BT 6 power supply for at least 5 seconds (remove X1).
Then reinstall X1.
The BT 6 is booted with the new firmware.
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