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SMARTAXIS LADDER PROGRAMMING MANUAL FT9Y-B1382

19-15

19: PULSE OUTPUT INSTRUCTIONS

RAMP (Trapezoidal Control)

Note: Configure multiple PULS (pulse output), PWM (pulse width modulation), RAMP (trapezoidal control), and ARAMP (RAMP with table)

instructions so that they do not share the same pulse output port.

However, the ZRN (zero return) instruction can be configured with the same pulse output port as the PULS (pulse output), PWM (pulse width

modulation), RAMP (trapezoidal control), and ARAMP (RAMP with table) instructions.

Note: The RAMP instruction cannot be used in an interrupt program.

If used, a user program execution error will result, turning on special internal relay M8004 and the ERR LED on the SmartAXIS. For details about the

user program execution errors, see "User Program Execution Errors" on page 4-13.

Applicable SmartAXIS

Note: These instructions cannot be used with FT1A-H40RC and FT1A-B40RC.

Valid Devices

Special data registers cannot be designated as S1. Internal relays M0 through M1277 can be designated as D1. Special internal relays cannot be

designated as D1. The first digit of the internal relay number must be set to 0.

The RAMP instruction outputs pulses with a frequency change function.

When the input is on, pulses of the initial pulse frequency specified by S1 are

output, and then the pulse frequency is increased by a fixed ratio until it reaches

the steady pulse frequency.

After steady pulse output at the steady pulse frequency, the pulse frequency is

decreased before the pulse count reaches the preset value specified by S1, and

then pulse output stops when the preset value is reached.

*****

RAMP

*****

RAMP

*****

FT1A-12

FT1A-24

FT1A-40

FT1A-48

FT1A-Touch

—

X (Note)

—

Device

Function

Constant

Repeat

S1 (Source 1)

Control register

—

S2 (Source 2)

Initialization input

—

D1 (Destination 1)

Operation status

—

Steady pulse

frequency

Initial pulse

frequency

Frequency

increase ratio

10 ms

area = Preset value

Frequency increase time

Frequency increase and

decrease times are the same

Frequency increase and

decrease ratios are the same

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19: PULSE OUTPUT INSTRUCTIONS

19-16

SMARTAXIS LADDER PROGRAMMING MANUAL FT9Y-B1382

Settings



Device tab

1. Select instruction

This item selects which RAMP instruction to use (RAMP1 or RAMP2).

The reversible control mode that can be selected varies based on the instruction.

For limitations based on the combination of instruction, reversible control mode, and the pulse output mode, see "9. Reversible

control enable" on page 19-18.

2. S1 (source 1): Control register

S1 specifies the starting number of the data registers to use with RAMP1 or RAMP2 instructions.

Starting from the specified number, 9 consecutive 16-bit data registers are used.

The range of available data register numbers is D0 to D991 and D1000 to D1991.

Note: The upper and lower data registers change according to the 32-bit data storage method specified.

For details, see Chapter 5 "Special Functions" – "32-bit Data Storage Setting" in the SmartAXIS Pro/Lite User's Manual.

Storage

destination

Function

Setting

Reference

Starting number+0

Steady pulse frequency

Operation mode 0: 1 to 10,000

(increments of 1 Hz)

Operation mode 1: 20 to 10,000

(increments of 10 Hz)

"6. Steady pulse frequency" on page

19-18

Starting number+1

Initial pulse frequency

Operation mode 0: 1 to 10,000

(increments of 1 Hz)

Operation mode 1: 20 to 10,000

(increments of 10 Hz)

"7. Initial pulse frequency" on page

19-18

Starting number+2

Frequency change time

10 to 10,000 ms

"8. Frequency change time" on page

19-18

Starting number+3

Control direction

0: Forward

1: Reverse

"10. Control direction" on page 19-18

Starting number+4

Preset value (high word) (Note)

1 to 100,000,000 pulses

"11. Preset value" on page 19-18

Starting number+5

Preset value (low word) (Note)

Starting number+6

Current value (high word) (Note)

1 to 100,000,000 pulses

"12. Current value" on page 19-19

Starting number+7

Current value (low word) (Note)

Starting number+8

Error status

0 to 9

"13. Error status" on page 19-19

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SMARTAXIS LADDER PROGRAMMING MANUAL FT9Y-B1382

19-17

19: PULSE OUTPUT INSTRUCTIONS

3. S2 (source 2): Initialization input

S2 specifies the initialization input.

When the initialization input S2 is turned on, the initial values configured in the WindLDR RAMP instruction dialog box, on the

Setting tab, are stored in the control registers.

An external input (I0 to I35) (Note) or an internal relay (M0 to M1277) can be specified.

When the initialization input is on, the initial values are written to the data registers with each scan. To only initialize the values

one time, use the initialization input in combination with the SOTU (single output up) instruction or the SOTD (single output

down) instruction.

Note: For the 40-I/O type, external inputs (I0 to I27) can be used.

4. D1 (destination 1): Operation status

D1 specifies the starting number of the internal relays to use with the RAMP instructions. Starting from the specified internal

relay, 4 sequential internal relays are used. The range of available internal relay numbers is M0 to M1270. The first digit of the

internal relay number must be set to 0.



Setting tab

5. Operation mode

This setting selects the frequency range to output from the following operation modes. Select the operation mode according to

the steady pulse frequency and the initial pulse frequency used.

Note: The output frequency error is within ±5%.

Storage

destination

Function

Setting

Starting

number+0

Pulse output

0: Pulse output OFF

1: Pulse output ON

This relay turns on during pulse output.

This relay turns off when the RAMP instruction output stops.

This relay turns off when the specified number of pulses are

output and output ends.

Starting

number+1

Pulse output

complete

0: Pulse output not complete

1: Pulse output complete

This relay turns on when pulse output is complete.

This relay turns off when the RAMP instruction output starts.

Starting

number+2

Pulse output

status

0: Steady pulse output

1: Changing output pulse frequency

This relay turns off when the pulse output status is steady.

This relay turns on when the pulse output is changing.

Starting

number+3

Overflow

0: None

1: An overflow has occurred

This internal relay turns on when the pulses output exceed the

configured preset value. Pulse output continues even if an the

overflow occurs during steady output or while the pulse

frequency is changing.

However, pulse counting is suspended at the point when the

overflow occurred.

Operation mode

0: 1 Hz to 10 kHz (increments of 1 Hz) (Note)

1: 200 Hz to 100 kHz (increments of 10 Hz) (Note)

10.

11.

12.

13.

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19: PULSE OUTPUT INSTRUCTIONS

19-18

SMARTAXIS LADDER PROGRAMMING MANUAL FT9Y-B1382

6. Steady pulse frequency

This setting specifies the steady pulse frequency after the pulse frequency increases.

For operation mode 0, set the frequency in the range of 1 to 10,000 (increments of 1 Hz).

For operation mode 1, set the frequency in the range of 20 to 10,000 (increments of 10 Hz).

7. Initial pulse frequency

This setting specifies the frequency when pulse output starts.

For operation mode 0, set the frequency in the range of 1 to 10,000 (increments of 1 Hz).

For operation mode 1, set the frequency in the range of 20 to 10,000 (increments of 10 Hz).

8. Frequency change time

This setting specifies the time to increase and decrease the pulse frequency.

Set the time between 10 and 10,000 ms in increments of 10 ms. The first digit of the setting is ignored.

9. Reversible control enable

This setting enables or disables reversible control and selects the reversible control method from the following reversible control

modes.

There are two modes for the pulse output mode: single-pulse and dual-pulse. They can be combined with reversible control as

follows.

The ports used on the SmartAXIS vary based on the instruction used, the combination of the pulse output mode and reversible

control, and the model used.

Note: When using single-pulse mode on the 40-I/O type, Q16 or Q17 are used. Therefore, PULS3, PWM3, or PULS4, PWM4 cannot be used.

10. Control direction

When reversible control is enabled, store 0 in this data register for forward operation and store 1 in this data register for reverse

operation.

11. Preset value

This setting configures the total number of output pulses from 1 to 100,000,000.

Reversible control enable

0: Reversible control disabled

1: Reversible control (single-pulse output)

2: Reversible control (dual-pulse output)

Reversible control

disabled

Select this option when using pulse output

in a single direction. Pulse A and pulse B

can be used independently.

Reversible control

Single-pulse

output mode

Pulse A is used as pulse output. Pulse B on/

off is used as reversible control.

Reversible control

Dual-pulse output

mode

Pulse A is used as forward pulse (CW)

output.

Pulse B is used as reverse pulse (CCW)

output.

Instruction

Operating condition

Port used

40-I/O type

48-I/O type

Pulse output

port

Reversible

control port

Pulse output

port

Reversible

control port

RAMP1

Reversible control disabled

Q14

—

Q14

—

Reversible control (single-pulse output)

Q14

Q16 (Note)

Q14

Q12

Reversible control (dual-pulse output)

Q14

Q15

Q14

Q15

RAMP2

Reversible control disabled

Q15

—

Q15

—

Reversible control (single-pulse output)

Q15

Q17 (Note)

Q15

Q13

Dual-pulse output mode cannot be used.

—

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SMARTAXIS LADDER PROGRAMMING MANUAL FT9Y-B1382

19-19

19: PULSE OUTPUT INSTRUCTIONS

12. Current value

The number of pulses output from the pulse output port is stored in this data register. 

The current value is updated when the RAMP instruction is executed at each scan.

13. Error status

If a configuration error occurs when the RAMP instruction input changes from off to on, M8004 (user program execution error)

is turned on and this register is set to the error code.

Notes 1: The number of pulses in the frequency change region calculated by the initial pulse frequency, steady pulse frequency, and frequency

change time has exceeded the total number of output pulses. Adjust the settings by decreasing the steady or initial pulse frequency or by

shortening the frequency change time.

Notes 2: Set the initial pulse frequency so that it is lower than the steady pulse frequency.

Error code

Description

Normal

—

Initial pulse frequency designation

error

The initial pulse frequency was not set between 1 and 10,000 in operation mode 0.

The initial pulse frequency was not set between 20 and 10,000 in operation mode 1.

Preset value designation error

The preset value was not set between 1 to 100,000,000.

Steady pulse frequency

designation error

The steady pulse frequency was not set between 1 and 10,000 in operation mode 0.

The steady pulse frequency was not set between 20 and 10,000 in operation mode 1.

Frequency change time

designation error

The frequency change time was not set between 10 and 10,000.

Control direction designation error

The control direction was not set to 0 or 1.

Exceeded pulse count error

The number of frequency change pulses exceed the total number of output pulses

(Note 1).

The initial pulse frequency was set to the same frequency as the steady pulse frequency or it was set to a value larger than

the steady pulse frequency (Note 2).

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19: PULSE OUTPUT INSTRUCTIONS

19-20

SMARTAXIS LADDER PROGRAMMING MANUAL FT9Y-B1382

Examples: RAMP

RAMP1 instruction (reversible control disabled) timing chart

[RAMP1 instruction, S1 is specified as D200, D1 is specified as internal relay M50]

When the RAMP instruction input is on, pulses are output according to the settings configured by the control registers. M50 turns

on during pulse output. M52 turns on or off while increasing or decreasing the pulse frequency. Pulses are output according to the

frequency change time, until they reach the steady pulse frequency (from the initial pulse frequency). The frequency increases or

decreases every 10 ms. Pulse output stops when the pulses configured by the preset value are output. At this time, M50 turns off

and M51 turns on.

If the RAMP instruction input turns off during pulse output, pulse output is canceled. If the RAMP instruction input turns on again,

the pulse count is reset and pulse counting starts. Even if the contents of the control registers are changed during pulse output,

the change is not reflected in the pulse output operation. The changed content is reflected the next time the RAMP instruction is

executed.

The changes from the initialization input are not reflected while the RAMP1 instruction input is on. If you wish to initialize the data

registers with the initialization input, turn the initialization input on after turning off the input.

M50

RAMP

D200

PAMP instruction

input

RAMP instruction input

Pulse output port

Q14

RAMP1 instruction (reversible control enabled, single-pulse output mode) timing chart

[RAMP1 instruction, S1 is specified as D200, D1 is specified as internal relay M50]

When the RAMP instruction input is on, pulses are output according to the settings configured by the control registers. The

reversible control signal is output from Q16 or Q12. When pulse output starts, M50 turns on. M52 turns on while the pulse

frequency is increasing or decreasing. The pulses increase according to the frequency change time every 10 ms until they reach

the steady pulse frequency (from the initial pulse frequency). When the configured number of pulses are output, the pulses stop.

In this situation, M50 turns off and M51 turns on.

If the RAMP instruction input turns off during pulse output, pulse output is canceled. If this input turns on again, the operation

starts from the beginning. Even if the contents of the data registers are changed during pulse output, the change is not reflected

in the pulse output operation. The changed content is reflected the next time the RAMP instruction is started.

The changes from the initialization input are not reflected while the RAMP1 instruction input is on. If you wish to initialize the data

registers with the initialization input, turn the initialization input on after turning off the input.

M50

RAMP

D200

RAMP instruction

input

RAMP instruction input

Output pulse

Q14

RAMP1 instruction (reversible control enabled, dual-pulse output mode) timing chart

[RAMP1 instruction, S1 is specified as D200, D1 is specified as internal relay M50]

When the RAMP instruction input changes from off to on, pulses are output from Q14 or Q15 according to the settings configured

by the data registers. When pulse output starts, M50 turns on. M52 turns on while the pulse frequency is increasing or decreasing.

The pulses increase according to the frequency change time every 10 ms until they reach the steady pulse frequency (from the

initial pulse frequency). When the configured number of pulses are output, the pulses stop. In this situation, M50 turns off and

M51 turns on.

If the RAMP instruction input turns off during pulse output, pulse output is canceled. If this input turns on again, the operation

starts from the beginning. Even if the contents of the data registers are changed during pulse output, the change is not reflected

in the pulse output operation. The changed content is reflected the next time the RAMP instruction is started.

The changes from the initialization input are not reflected while the RAMP1 instruction input is on. If you wish to initialize the data

registers with the initialization input, turn the initialization input on after turning off the input.

M50

RAMP

D200

RAMP instruction

input

RAMP instruction input

Forward pulse

Q14

Sample program

[To output 48,000 pulses with the frequency change function (reversible control disabled) from Q14]

Function

Device address

Setting value

Details

Operation mode

—

Mode 1

200 Hz to 100 kHz

Steady pulse frequency

600

6000 Hz

Initial pulse frequency

300 Hz

Frequency change time

2000

2,000 ms

Reversible control enable

—

Disable

—

Control direction

—

Preset value

D4, D5

48000

Preset value=48,000

M8120

M100

RAMP

When the RAMP instruction input (I0) turns on, pulse output

starts

Turn on initialization input (M0)

19: PULSE OUTPUT INSTRUCTIONS

19-24

SMARTAXIS LADDER PROGRAMMING MANUAL FT9Y-B1382

[To output 100,000 pulses with the frequency change function (reversible control by single-pulse output) from Q14]

When the RAMP instruction input (I0) changes from off to on, pulse output starts. When I1 is off, the reversible control signal

(Q15) turns off (forward).

When I1 is on, the reversible control signal (Q15) turns on (reverse).

Function

Device address

Setting value

Details

Operation mode

—

Mode 1

200 Hz to 100 kHz

Steady pulse frequency

1000

10 kHz

Initial pulse frequency

500 Hz

Frequency change time

2000

2,000 ms

Reversible control enable

—

Single-pulse output

—

Control direction

Forward

Forward=0

Preset value

D4, D5

100000

Preset value=100,000

M8120

REP

D1 -

MOV(W)

S1 -

REP

D1 -

MOV(W)

S1 -

M100

RAMP

When the RAMP instruction input (I0) turns on, pulse output

starts

When I1 is off, store 0 (forward) in control direction (D3)

When I1 is on, store 1 (reverse) in control direction (D3)

Turn on initialization input (M0)

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