SMC Networks LECSA Series - Set the Parameter of Command Pulse Input Form

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5.3.7 Set the parameter of command pulse input form

It is required to set the command input pulse form dependent on the upper unit pulse train when using the Position

control mode (pulse input).

・Input form (3 types)

① Forward rotation pulse train/Reverse rotation pulse train

② Pulse train/ Direction phase pulse train/B-phase pulse train

③ A-phase pulse train/ B-phase pulse train

・Logic (2 types)

① Positive logic

② Negative logic

・Input form (3 pulse types) × positive/negative logic (2 types) = 6 selectable types

In the upper level device (positioning module), there is a parameter which sets the output pulse form (mode). The form

of the upper level device (positioning module) must be made “compatable” with the LECSA. If the forms are not

compatable, the operation work correctly. Please be aware that depending on the upper level device (positioning

module), the “command input pulse forms” above may not be available.

Parameter

Initial

value

Setting

range

Unit

Control mode

No.

Symbol

Name

Position

Internal

speed

Internal

torque

PA13

*PLSS

Command input pulse form

000h

Refer to

the text.

Select the input form of the pulse train input signal. Command pulses may be input in any of three different forms, for

which positive or negative logic can be chosen.

Arrow or in the table indicates the timing of importing a pulse train.

A- and B-phase pulse trains are imported after being multiplied by 4.

Signed pulse

train

Forward rotation

pulse train

Reverse rotation

pulse train

Selection of command input pulse form

Parameter No. PA13

Setting

Pulse train input filter selection

Pulse train form

Forward rotation command Reverse rotation command

Signed pulse

train

A-phase pulse

train

B-phase pulse

train

Forward rotation

pulse train

Reverse rotation

pulse train

A-phase pulse

train

B-phase pulse

train

Positive logic

Setting

1Mpps or less

500kpps or less

200kpps or less

Negative logic

Command pulse frequency

Ex.) Setting of Command input Pulse form, when:

(1) The command pulse frequency is 200kpps or less and

(2) The pulse train form is set to positive logic, with the NP signal high and low

[PA13] = 201

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SMC Networks LECSA Series - Set the Parameter of Command Pulse Input Form

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