Mitsubishi Electric WS0-CPU0 Operating Manual page 231

Figure 212:
Press cycle for the Eccentric
press contact function block
without Dynamic cam
Logic programming – Function blocks
Top output and Upstroke output
The Top output is typically used to stop the press and is connected to another
complementary press function block, e.g. Press setup or Press single stroke.
The Upstroke output is typically connected to another complementary press function
block, e.g. Press single stroke or Press Setup. Additionally it can be used to initiate
upstroke muting.
This function block sets the Upstroke output and the Top output based on value
changes of the cam inputs. If the function block detects an error, both outputs are set
to Low.
Without Dynamic cam
The Upstroke output is set to High with a rising edge (transition from Low to High) of
the Upstroke cam input and is set to Low with a rising edge of the Overrun cam input.
The Top output is set to High if the Overrun cam input is High.
With Dynamic cam
If this function block is configured with Dynamic cam, the start of the Top phase can
be brought forward with a falling edge (transition from High to Low) of the Dynamic
cam input.
The Upstroke output is set to High with a rising edge (transition from Low to High) of
the Upstroke cam input. It is set to Low either with a rising edge of the Overrun cam
input or with a falling edge of the Dynamic cam input, whichever occurs first.
The Top output is set to High with a rising edge of the Overrun cam or with a falling
edge of the Dynamic cam input, whichever occurs first. The Top output is set to Low
with a falling edge of the Overrun cam input.
Chapter 9
228