Maxim-integrated 71M6533-DB Manual do Utilizador descarregar pdf (Página 18)

71M6533-DB Demo Board User’s Manual

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

METER RMS DISPLAY

CONTROL (LCD)

Comment

Description:

Allows user to select meter RMS display for voltage or current.

Usage:

MR [option]. [option]

Command

combinations:

MR1. [phase]

Displays instantaneous RMS current

MR2. [phase]

Displays instantaneous RMS voltage

Example:

MR1.3

Displays phase C RMS current.

Phase 4 is the measured neutral current.

No error message is issued when an invalid parameter is entered, e.g. MR1.8.

Commands for Controlling the MPU Power Save Mode:

POWER SAVE MODE

Comment

Description:

Enters power save mode

Disables CE, ADC, CKOUT, ECK, RTM, SSI, TMUX VREF,

and serial port, sets MPU clock to 38.4KHz.

Usage:

Return to normal mode is achieved by resetting the MPU (Z command).

Commands for Controlling the RTC:

REAL TIME CLOCK

CONTROL

Comment

Description:

Allows the user to read and set the real time clock.

Usage:

RT [option] [value] … [value]

Command

combinations:

RTDy.m.d.w: Day of week

(year, month, day, weekday [1 = Sunday]). If the weekday is

omitted it is set automatically.

RTR

Read Real Time Clock.

RTTh.m.s

Time of day: (hr, min, sec).

RTAs.t

Real Time Adjust: (start, trim). Allows trimming of the RTC.

If s > 0, the speed of the clock will be adjusted by ‘t’ parts per

billion (PPB). If the CE is on, the value entered with 't' will be

changing with temperature, based on Y_CAL, Y_CALC and

Y_CALC2.

Example:

RTD05.03.17.5

Programs the RTC to Thursday, 3/17/2005

RTA1.+1234

Speeds up the RTC by 1234 PPB.

The “Military Time Format” is used for the RTC, i.e. 15:00 is 3:00 PM.

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