Regarding calculation of challenge frame, the UPS send 0圆5 frame ID then 0圆8 frame ID, after that the PC response with 0圆5 frame ID and UPS send confirmed frame by 0圆5 frame ID. but calculation of frame checksum and Challenge string calculation don't pass.ĭata length of protocol has been set to 32 bytes, So each frame has 35 bytes. ![]() Some information of "" site is compatible with things I observed. ![]() I want to detect command of UPS such as shutdown command by a microcontroller-based device. I monitored the communication of the UPC and PC witch UPS deriver has been initialed. The serial port protocol seems that is based on microlink protocol which has not documented. I have a APC SMC1000-2UC UPS device that has a serial port to connection.
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