Fagor CNC 8055, Operating Manual

Page: 181 / 256

Operating manual
CNC 8055
CNC 8055i
PLC
10.
·T· M
ODEL
S
OFT
: V02.2
X
·181·
Mo
nit
o
ri
n
g
"Autozoom" softkey
The "Autozoom" softkey only appears when a block that is being monitored is too long and does
not fit on the screen.
Pressing this softkey automatically adjusts the displayed blocks to the width of the screen. This way,
the CNC shows the whole block without having to scroll it with the keys.
After having pressed the "Autozoom" softkey, if the blocks are too small, the CNC will not show the
data of the elements. Also, if autozoom has been activated, it is not possible to scroll up and down
toward blocks that are not displayed on the screen.
"Finish" softkey
It may be used to exit the PLC monitoring screen in ladder diagram.
Elements of the PLC program
As mentioned earlier, the instructions of the PLC program in ladder language is made up of elements
connected to each other by segments. These elements may be the following:
Normally open contact:
The normally open contact is always displayed in the consultations area. Consults the logic state
of a signal and, depending on the result, lets the flow pass or not.
Normally closed contact:
The normally closed contact is always displayed in the consultations area. Consults the logic
state of a signal and, depending on the result, lets the flow pass or not.
Relay coil:
The relay coil is always displayed in the actions area. It activates or deactivates depending on
whether it receives the flow or not.
All the elements may appear in the PLC program in ladder language joined together in serial or in
parallel.
Comments are not displayed when monitoring the PLC program in ladder language.
i
If I10 = 0, the contact is inactive and the flow does not pass.
If I10 = 1, the contact is active and the flow passes.
If M100 = 0, the contact is active and the flow passes.
If M100 = 1, the contact is inactive and the flow does not pass.
If the flow reaches the relay coil, it will be active and its value will be O1 = 1.
If the flow does not reach the relay coil, it will be inactive and its value will be O1 = 0.
I10
M100
O1