CARLO GAVAZZI EM21 - COMMUNICATION PROTOCOL V1 REV0 Manual de usuario descargar pdf (Pagina 6)

CARLO GAVAZZI

CONTROLS

SERIAL COMMUNICATION PROTOCOL

WM24-96

V1 R0

Page

2 RAM VARIABLES MAP

2.1 INSTANTANEOUS VARIABLES MAP (RAM, PAGE 1)

ADDRESS BYTE VARIABLE Type ADDRESS BYTE VARIABLE Type

0200

2 V L1-N V

0239

3 W dmd P

2 0202 2 V L2-N V 26 023C 2 Hz H

3 0204 2 V L3-N V 27 023E 1 Unit V inf

0206

2 A L1 A

023F

1 Unit A inf

5 0208 2 A L2 A 29 0240 1 Unit P inf

020A

2 A L3 A

4 Wh (tot) E

7 020C 3 W L1 P 31

0241*

4 Wh + E

8 020F 3 W L2 P 32 4 varh (tot) E

0212

3 W L3 P

0245*

4 Wh - E

10 0215 3 var L1 P 34 4 Wh (t1) E

0218

3 var L2 P

0249*

4 varh C+ E

12 021B 3 var L3 P 36 4 varh (t1) E

13 021E 3 VA L1 P 37

024D*

4 varh C- E

0221

3 VA L2 P

1 Asy V D

15 0224 3 VA L3 P 39

0251

0227

1 PF L1 C

17 0228 1 PF L2 C 41

18 0229 1 PF L3 C 42

022A

V ∑

20 022C 3

W ∑

P 44

022F

var ∑

0232

VA ∑

23 0235 1

PF ∑

C 47

0236

3 VA dmd P

NOTE *: the variable stored in this address is depending on the parameter “counter”.

NOTE: all the variables in this table are contiguous. It is possible to read more variables at a time,

up to 12 words at a time. Other maximum values are stored in the page 0 of the RAM.

2.1.1 Variable format

The value of all the instantaneous variables is stored as two’s complement integer value. It is

possible to read the C-, D- and H-type variables with a single read command, while two read

command are requested for V-, A- and P-type variables (variable and decimal point position).

The decimal point and the multiplier have to be set according to the Unit V, Unit A, Unit P word

coding (see the following table) for voltage (V), current (A) and power (P) variables, in the position

“1111” for the D-type (%) variables, “11.11” for the H-type (Hz) variables, “111.1k” per the E-type

(energy) variables, “111.1” for the M-type (cubic meter) variables and in position “11.11 ” for the C-

type variables (PF). The single phase PF variables are stored with a positive value if the power

factor is “L” (inductive), and with a negative value if the power factor is “C” (capacitive). The variable

“PF ∑“ has neither L nor C sign indication.

Decimal point and multiplier coding

INF value

d.p

INF value

d.p

3 1.111 8 111.1k

4 11.11 9 1111k

5 111.1 10 11.11M

6 1111 11 111.1M

7 11.11k 12 1111M

Gross Automation (877) 268-3700 · www.carlogavazzisales.com · [email protected]

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CARLO GAVAZZI EM21 - COMMUNICATION PROTOCOL V1 REV0 Manual de usuario Pagina 6

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