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021814/03/21
Phone +49 551 79001-0 · Fax +49 551 79001-65 · [email protected] · www.thiesclima.com
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10 Bootloader
The Software in the device consists of two components:
- bootloader
- firmware
The program part "Bootloader" cannot be changed and is performed each time the device is
started. The behavior of the boot loader depends on the parameter "FB" (fast boot):
Command: FB=0
The bootloader waits approx. 10s for the receipt of the new firmware via XMODEM protocol.
The symbol "C" is output every second. After receiving the new firmware or after the 10s
have elapsed, the firmware is started.
Command: FB=1
The bootloader immediately starts the firmware.
To transmit the firmware, the XMODEM CRC protocol with a user data length of 128 bytes
per packet is used. The interface is operated with 9600 baud, 8 data bits, no parity and one
stop bit (9600,8, N, 1).
For assisting the parameter settings and/or special configurations there is our cost-free De-
vice Utility Tool art.-no. 9.1700.81.000 available for download on our homepage. Please
download the tool with following link.
https://www.thiesclima.com/de/Download/
In the section "General", the program "Thies Device Utility".