Samlex America SA-1500 - Manual (Page 25)

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8-2-2-5. To query status command
Format ：STUS?
Illustration ：Don’t need to add any of parameter.
To respond the result be hexadecimal code replaced by 2
ASCll codes that is between 00 ~ FF (0~255), then convert
the Hex code to the binary digit after obtaining 8 bytes digit
that can be one of following
：
“B0” UVP ( LSB )
“B1” OVP
“B2” OLP ( Loading > 110% )
“B3” FLP ( Loading > 100% / 3min )
“B4” OTP
“B5” BATT Too Low
“B6” BATT Too High
“B7” BATT Too High ( MSB)