X22
X20
C235
M9235
K- 5
X21
RST C 2 35
The X20 drives the M9235 to define the Up/Down count direction of the C235.
When the X22 is ON, the C235 will receive that count signal from the X0.
When the signal X21 is ON, the RST instruction is executed. C235's present
value is reset to “0” and its output contact becomes OFF.
The C235~C240 (and the C241~C242 at the SHSC Mode 2) are 1-phase
high speed counters which should use the user program to control the
activation and reset processes.
The X20 drives the M9242 to define the UP/Down count direction of the
C242.
When X22 is ON, C242 is activated to receive the counting signal from X2.
When X21 is ON, the RST instruction is executed. The C242's present
value resets to “0” and its output contact becomes OFF. If the application
of C242 is not demanded to reset by the program, could ignore this line.
When X3 (the designated built-in reset signal of C242) is ON, the present
value of C242 will be reset to “0” and its contact will become OFF.
The set value of C242 is provided by the content value of D1 and D0.
The C241~C243 at the Mode 1 or C243~C245 at the Mode 2 are
1-phase high speed counters which should use the program to activate
then by the program or built-in reset input to clear.
The X20 drives the M9244 to define the UP/Down count direction of the
C244.
When X22 is ON and X6 is ON (the built-in start-up signal of C244),
the C244 is activated to receive the counting signal from X0.
When X1 (the designated built-in reset signal of C244) is ON, the present
value of C244 will be reset to “0” and its contact will become OFF.
The C244~C245 at the Mode 1 are 1-phase high speed counters which
should use the program and start-up input to activate then by the
program or built-in reset input to clear.
When the start-up signal X22 is ON and there is pulse input from the X0 point, the present value of C235 will
Up/Down change.
When the present value of the C235 increases from -6 to -5, its output contact switches from OFF to ON. When the
present value of a counter decreases from -5 to -6, its output contact switches from ON to OFF.
If the counter up counts accumulated beyond +2,147,483,647, the present value will automatically change to
-2,147,483,648. Similarly, the down counting below -2,147,483,648 will have the result +2,147,483,647.
When the rest signal X1 is ON, the RST instruction is executed. Meanwhile, the C235 present value is reset to “0” and
its output contact becomes OFF.
The direction of Up/Down count for an 1-phase counter C235~C245 is determined by the ON/OFF status of related
M9235~M9245. If the relay is OFF, the counter executes Up counting; while ON is for Down counting.
When X21 is ON, the RST instruction is executed. The C244's present
value resets to “0” and its output contact becomes OFF. If the application
of C244 is not demanded to reset by the program, could ignore this line.
Present value of C235
Up/Down count control
X20
Reset signal
X21
start-up signal
X22
count signal
X0
Output contact of C235
If the output contact was ON
X22
X20
C242
M9242
D0
X21
RST C2 4 2
X22
X20
C244
M9244
K200
X21
RST C24 4
26
2-7-1 1-Phase High Speed Counter
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