Schneider Electric SR2MAN01 Manuale Utente

LD Language Elements

SR2MAN01 11/2007

145

The contact associated with the 

Message function block indicates whether the 

function block is activated.

It may be used as many times as necessary as many times as necessary in the 
program. It may be used according to 2 modes: normally open or normally closed, 
described below.

Symbol of the normally open contact associated with a 

Message function block:

The contact is 

conducting when the function block is activated.

Symbol of the normally closed contact associated with a 

Message function block:

The contact is 

conducting as long as the function block is not activated.

Example: Lighting-up of a LED connected to the 

Message No.1 function block 

output  

When function block no. 1 is activated, the associated alarm message is sent and 
the LED lights up, otherwise it is off.

To modify the operating mode of a coil or a contact from the front panel of the smart 
relay (the programming window displayed on screen), simply:

z

Position the cursor on the symbol representing the coil mode or on the letter of the contact,

z

Proceed as described in the paragraph Modifying an element,, p. 44, to scroll 
through the possible modes for a coil or contact types possible (

S for normally 

open contact, 

s for a normally closed contact).

The 

Message function block cannot be configured from the front panel of the smart 

relay. This function must be configured from the programming software.

See on-line help of the programming software for more information on configuration. 

Status of contacts on program initialization:

z

The 

normally open mode (direct state) is inactive,

z

The 

normally closed mode (inverse state) is active.