Maxim-integrated 71M6533-DB Manual de usuario descargar pdf (Pagina 20)

71M6533-DB Demo Board User’s Manual

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Commands for Controlling the Metering Values Shown on the LCD Display:

METER DISPLAY

CONTROL (LCD)

Comment

Description:

Allows user to select internal variables to be displayed.

Usage:

M [option]. [option]

Command

combinations:

Wh Total Consumption (display wraps around at 999.999)

Temperature (C° delta from nominal)

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)

Operating Time (in hours)

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.

1 2 ... 15 16 17 18 19 20 21 22 23 24 25 ... 74 75

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Maxim-integrated 71M6533-DB Manual de usuario Pagina 20

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