SMC Networks aPNEUALPHA2 Series Programming Manual page 51

α
PneuAlpha2 Simple Application
FB Name
Hour
Meter
[HM]
Speed
Detect
[SPD]
PWM
[PWM]
Retentive
Alternate
[RAL]
Addition
[ADD]
Subtrac-
tion
[SUB]
Multiplica-
tion
[MUL]
Division
[DIV]
FB Symbol Description of Function Block
The Hour Meter Function Block holds the
output status ON for a maximum of 32767
hours, 32767 minutes and 59 seconds. If
the input pin is turned OFF the elapsed
time will hold its value until either the clear
pin resets the time or the input pin is turned
ON again.
The Speed Detect Function Block is used to
count the incoming pulses max. 20Hz (with
an extension module max. of 1kHz) for a
set period of time. The upper and lower lim-
its can be set from -32768 to +32767 and
the Period interval's set range is 1 to 32767
in 10ms increments.
The Pulse Width Modulation Function Block
changes the output status according to a
set period of time with a minimum of 100ms
a n d a m a x i m u m o f 3 2 7 6 7 0 0 m s i n
increments of 100ms. The percentage duty
for the function controls the amount of
elapsed time before the output status is
changed.
The Alternate Function Block is used to
reverse the ON and OFF state of the output
as and when the input pin receives a signal.
The output will be set ON when the input
pin goes high and remain ON until the input
receives the second rising edge. When the
power is turned OFF the function block will
use the last alternation operation to control
the output.
T h e A D D F u n c t i o n B l o ck i s u s e d t o
summate two input values
The SUB Function Block is used to subtract
two input values.
The MUL Function Block is used to multiply
two input values.
The DIV Function Block is used to divide
two input values.
Function Blocks 6
Memory
Section
Use
19 Byte 6.18
25 Byte 6.19
16 Byte 6.20
13 Byte 6.21
20 Byte 6.22
20 Byte 6.23
20 Byte 6.24
20 Byte 6.25
6 - 3