Continuous setpoint specification (tracking mode) – Festo Контроллер позиционирования CPX-CMAX User Manual

Page 135

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3. Drive functions

3−73

Festo P.BE−CPX−CMA X−CONTROL−EN en 0908NH

3.4.2

Continuous setpoint specification (tracking mode)

Setpoint value
Output data

Start
CPOS.START

Acknowledge Start
SPOS.ACK

Motion Complete
SPOS.MC

N − 1

N

N +
20

1

0

1

0

1

0

1

0

N +
21

1

2

3

4

Continuous setpoint specification active

N + 1

N +
19

Fig. 3/12: Start the positioning task

1 Set the desired setpoint value (position, force) and the

speed setpoint in the output data of the PLC.

2 If SPOS.ACK = logic 0 1, the PLC can start the continuous

setpoint value mode with the rising edge at CPOS.START
2. The CMAX accepts the currently registered setpoint
value and the speed setpoint and starts the positioning
task.

3 As long as CPOS.START = 1, the setpoint value can be

changed at any time. The CMAX makes the axis position
follow the setpoint value and takes the set accelerations
and speeds into account.

4 The setpoint tracking is ended 4 with a falling edge at

CPOS.START

3.

The drive is stopped with a stop ramp.

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