Eaton easySafety, Manual

Page: 245 / 695

DG, diagnostics
241
02/16 MN05013001Z EN
Memory requirement
The DG function block requires 104 bytes of memory plus 4
bytes per constant at the function block inputs.
Operation of the function block
A DG function block is assigned to a safety function block.
The safety function block indicates its status at its DG output
(diagnostics register). This status, such as “Foot switch not
actuated” with the FS safety function block, can be assigned
to a contact of the DG function block in the standard
function block diagram. If the status occurs at the safety
function block, the assigned contact will close on the DG
function block. The 8 contacts of a DG function block allow
8 states to be associated with the contacts. If a safety
function block has more than 8 states, a second DG function
block can process the additional status messages.
The DG function block is assigned to the corresponding
safety function block in the standard function block diagram.
After you have dragged the DG function block into this
diagram, right-clicking the function block with the mouse
will call up its Parameters tab. First associate the safety
function block with the DG function block. To do this enter
the number of the DG function block and enter in the Safety
function block field the type of safety function block you
have entered in the safety circuit diagram. The Safety
function block states field shows 8 outputs of the DG
function block with a status menu from which you can select
the required status message.
If the safety function block takes on one of these states, the
DG..Q signal contact assigned to it will close. The contacts of
the function block are associated in the standard circuit
diagram.