CARLO GAVAZZI WM4-96 - PROGRAMMING Manual de usuario descargar pdf (Pagina 15)

CARLO GAVAZZI

CONTROLS

SERIAL COMMUNICATION PROTOCOL

WM4-96

V1 R3

Page

If the digital outputs are set as alarm, the values stored in addresses from 1C8h to 1CEh indicate the

control type, coded as follows:

0 = UP

1 = UP-LATCH

2 = DOWN

3 = DOWN LATCH

The values stored in addresses from 1D0h to 1D6h explain if the relay is normally energised or de-

energised:

0 = Normally de-energised

1 = Normally energised

In the addresses from 1D8h to 1DEh the variables associated to the alarms are stored, according to

the “Variable type coding” table (see paragraph 3.1.1).

Example: if a control on variable W1 has been associated to alarm1, in the address 1DAh the value

12 must be stored

The set-point ON and OFF values are stored as unsigned short.

The delay values are stored as short and must be included in the range from 0 to 255 seconds.

Example 7: “Diagnostic” read command

2-word read command request frame (8 byte):

01h

04h

01h

C0h

00h

02h

CRC

Read command answer frame (9 byte):

01h

04h

00h

01h

00h

CRC

Digital output 0: NO Diagnostic

Digital output 1: NO Diagnostic

Digital output 2: Diagnostic OFF

Digital output 3: NO Diagnostic

Example 8: “Alarm” read command

2-word read command request frame (8 byte):

01h

04h

01h

C4h

00h

02h

CRC

Read command answer frame (9 byte):

01h

04h

00h

01h

00h

CRC

Digital output 0: NO Alarm

Digital output 1: Alarm OFF

Digital output 2: NO Alarm

Digital output 3: NO Alarm

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

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