Maxim Integrated 71M6533-DB - Manual (Page 20)

71M6533- DB Demo Board User’s Manual
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Commands for Controlling the Metering Values Shown on the LCD Display:
M METER DISPLAY
CONTROL (LCD) Comment
Description: Allows user to select internal variables to be displayed.
Usage: M [option]. [option]
Command
combinations:
M Wh Total Consumption (display wraps around at 999.999)
M0 Wh Total Consumption (display wraps around at 999.999)
M1 Temperature (C° delta from nominal)
M2 Frequency (Hz)
M3. [phase] Wh Total Consumption (display wraps around at 999.999)
M4. [phase] Wh Total Inverse Consumption (display wraps around at 999.999)
M5. [phase] VARh Total Consumption (display wraps around at 999.999)
M6. [phase] VARh Total Inverse Consumption (display wraps around at 999.999)
M7. [phase] VAh Total (display wraps around at 999.999)
M8 Operating Time (in hours)
M9 Real Time Clock
M10 Calendar Date
M11. [phase] Power factor
M13 Mains edge count for the last accumulation interval
M13.1 Main edge count (accumulated) – zero transitions of the input signal
M13.2 Main edge count for the last accumulation interval
M14.1 Absolute count for Wh pulses. Reset with CPC command.
M14.2 Absolute count for VARh pulses. Reset with CPC command.
M15.[phase] I RMS display
M16.[phase] V RMS display
Example: M3.3 Displays Wh total consumption of phase C.
M5.0 Displays VARh total consumption for all phases.
Displays for total consumption wrap around at 999.999Wh (or VARh, VAh) due to the limited number of
available display digits. Internal registers (counters) of the Demo Code are 64 bits wide and do not wrap
around.
When entering the phase parameter, use 1 for phase A, 2 for phase B, 3 for phase C, and 0 or blank for all
phases.