Pulse OutputsSection 7-6

7-6-3

Specifications

 

 

 

 

 

 

 

 

 

 

 

 

Item

 

 

 

Specification

 

 

 

 

 

 

 

 

Acceleration/ decelera-

None

 

 

 

Yes

 

tion

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Trapezoid

 

None

 

 

 

None (acceleration or

Yes with separate

 

 

 

 

 

 

deceleration)

acceleration and

 

 

 

 

 

 

 

deceleration rates

 

 

 

 

 

Instructions for inde-

PULS(886) +

 

PULS(886) (Elec-

PULS(886) +

PLS2(887)

pendent-mode posi-

SPED(885)

 

 

tronic Cam Control)

ACC(888)

 

tioning

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Instructions for contin-

SPED(885)

 

 

---

ACC(888)

---

uous-mode speed con-

 

 

 

 

 

 

trol

 

 

 

 

 

 

 

 

 

 

 

 

 

Output frequencies

Constant specified for

 

0 Hz to 1 MHz

0 Hz to 1 MHz

 

 

 

SPED(885): 0 Hz to

 

 

 

 

 

 

1 MHz

 

 

 

 

 

 

 

Word specified for

 

 

 

 

 

 

SPED(885): 0 Hz to

 

 

 

 

 

 

1 MHz

 

 

 

 

 

 

 

 

 

 

 

 

 

Although the above ranges can be set for the instructions, the output frequency range is ulti-

 

 

mately controlled by the clock frequency. The output frequencies are obtained by dividing the

 

 

clock pulse with an integer dividing ratio, meaning the actual output frequency can be different

 

 

from the set frequency. (Refer to Precautions when Using Pulse Outputs on page 175 for details.)

 

 

The settings in the System Setup (Clock) are as follows:

 

 

 

20 MHz

Pulse output frequency range: 400 Hz to 1 MHz

 

 

 

10 MHz

Pulse output frequency range: 200 Hz to 200 kHz

 

 

 

5 MHz

Pulse output frequency range: 100 Hz to 100 kHz

 

 

 

2.5 MHz

Pulse output frequency range: 40 Hz to 50 kHz

 

 

 

1.25 MHz

Pulse output frequency range: 20 Hz to 20 kHz

 

 

 

 

 

 

 

 

Frequency accelera-

---

 

 

 

1 Hz to 9,999 Hz every 2 ms or 1 ms

tion/deceleration rate

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Duty ratio

 

50% (fixed)

 

 

 

 

 

 

 

 

Pulse output operation

One of the following can be set for each port in the System Setup.

 

modes

 

1) Relative pulse output:

 

 

 

 

 

 

 

 

 

 

No. of output pulses = pulse output value

 

 

 

 

2) Absolute linear pulse output:

 

 

 

 

No. of output pulses = PV of pulse output – target pulse amount

 

 

 

3) Absolute circular pulse output:

 

 

 

 

As above. If the circular maximum count is exceeded, the count value returns to 0000 0000

 

 

hex. (Circular maximum count is set in System Setup.)

 

 

 

4) Electronic cam control (linear) (output with absolute position specification:)

 

 

The direction is automatically determined from the relation between the PV and target position

 

 

(PV < Target = CW, PV > Target = CCW. No. of output pulses = PV of pulse output – target

 

 

pulse amount

 

 

 

 

 

5) One-shot pulse output:

 

 

 

 

Pulse turned ON for specified time between 0.01 and 9,999 ms via STIM(980) instruction

 

 

6) Pulse counter timer:

 

 

 

 

 

High-precision timer created using the one-shot pulse output function. Pulses are not output

 

 

externally.

 

 

 

 

 

7) Electronic cam (circular) (output with absolute position specification):

 

 

 

The direction is automatically determined from the relation between the PV and target position

 

 

(PV < Target = CW, PV > Target = CCW). No. of output pulses = PV of pulse output – target

 

 

pulse amount)

 

 

 

 

 

 

 

 

 

 

 

168

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Image 191
Omron FQM1-MMP21, FQM1-CM001, FQM1-MMA21 operation manual 168