CARLO GAVAZZI EM21 - COMMUNICATION PROTOCOL V1 REV0 Instrukcja Użytkownika Pobierz pdf (Strona 11)

CARLO GAVAZZI

CONTROLS

SERIAL COMMUNICATION PROTOCOL

WM24-96

V1 R0

Page

NOTE: a digital output can be used as remote control output only if the relevant “digital output type”

variable stored in EEPROM is correctly set (see paragraph 3.2.9).

2.2.5 Energy and utility metering and digital inputs

The number and the type of the working energy meters are depending on the “counter” parameter,

according to the following table.

counter

TOT TOT – PAR TOT – 1.CN TOT – 2.CN

RAM address

kWh + kWh tot kWh + kWh + 0241h

kWh - kvarh tot kWh - kWh - 0245h

kvarh C+ kWh t1 kvarh C+ kvarh C+ 0249h

kvarh C- kvarh t1 kvarh C- kvarh C- 024Dh

kvarh L+ kWh t2 kvarh L+ kvarh L+ 00E8h

kvarh L- kvarh t2 kvarh L- kvarh L- 00ECh

kWh t3 m

GAS day m

GAS tot 00F0h

kvarh t3 m

GAS night m

WATER tot 00F4h

kWh t4 00F8h

kvarh t4 00FCh

Digital inputs determinate the active tariff for energy metering (t1, t2, t3 or t4) or for the gas tariff (day

or night), or collect gas and water pulses or the synchronisation pulses for Wdmd and VAdmd

calculation, according to the selected value of ‘counter’ parameter.

counter input description dmd synchr.

IN3 Yes

TOT

IN2

Not used

Yes

IN3 Yes

TOT – PAR

IN2

Selection of the current tariff for energy

metering Yes

IN3 Selection of the current tariff for gas

metering

TOT – 1.CN

IN2

Gas pulses acquisition (weight of the pulse

=‘PrESCAL Cn.1’)

IN3 Water pulses acquisition (weight of the

pulse =‘PrESCAL Cn.2’)

TOT – 2.CN

IN2

Gas pulses acquisition (weight of the pulse

=‘PrESCAL Cn.1’)

If “counter” parameter is set to “TOT – PAR”, the coding of the energy tariffs is the following.

Tariff IN2 IN3

t1 open open

t2 open close

t3 close open

t4 close close

The current tariff is highlighted from the blinking of the t1, t2, t3 or t4 indication in the relevant display

page.

If “counter” parameter is set to “TOT – 1.CN”, the coding of the gas tariffs is the following.

Tariff IN3

Day open

Night close

t3 open

t4 close

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