User Manual

PD28-1-1021 / PD28-3-1021 V1.4 Hardware Manual (Rev. 1.03 / 2018-JAN-25) 21
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5 Reset to Factory Defaults
It is possible to reset the PD28-1-1021 / PD28-3-1021 to factory default settings without establishing a
communication link. This might be helpful in case communication parameters of the preferred interface
have been set to unknown values or got accidentally lost.
For this procedure it is necessary to disassemble the PANdrive and shorten two pads on the bottom side
of the printed circuit board (see Figure 5.1).
Please perform the following steps:
1. Power supply off
2. Short two pads as marked in Figure 5.1
3. Power up board
4. Wait until the on-board red and green LEDs start flashing fast (this might take a while)
5. Power-off board
6. Remove short between pads
7. After switching on power-supply all permanent settings have been restored to factory defaults
Short these two PADs on
the bottom of the PCB
Figure 5.1 Reset to factory default settings
6 On-board LED
The board offers one LED in order to indicate board status. The function of the LED is dependent on the
firmware version. With standard TMCL firmware the green LED flashes slowly during operation.
When there is no valid firmware programmed into the board or during firmware update the green LED is
permanently on.
Green LED
Figure 6.1 On-board LED