Miscellaneous
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Force Download Mode
In case the GWY-9xx is not responding for the firmware download command and when it does not allow the
further download in the unit, unit can be driven in the Force download mode. Follow the following step to enter
the force download mode.
1. Power off the unit
2. Remove all communication cables.
3. Short the pin 2 and 8 of Com1 (RJ45). (Prepare the special RJ cable for this).
4. Power on the unit.
5. Wait for 10 Seconds.
6. Unit enters the Force download mode.
7. Remove the short of pin 2 and 8 of com1 RJ45 keeping unit turn ON as it is.
8. Download the firmware first, using Com1 RS232 downloading cable.
Note: User need to use this force download mode for following drivers on COM1:
1. Modbus RTU (Unit as Slave)
2. Universal Serial Driver (ASCII)
Summary of Contents for GWY-900
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