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4. Functions

SMC-4DF-PCI, SMC-8DF-PCI

OUT (leading pulse output) and DIR (trailing pulse output)

The OUT (leading pulse output) signal and the DIR (trailing pulse output) signal are generated.

The motor is operated (rotated) in the positive direction (clockwise), when there is a phase difference of

+90° between DIR (trailing pulse output) and OUT (leading pulse output). On the other hand, the motor

is operated (rotated) in the negative direction (counterclockwise), when there is a phase difference

of -90° between DIR (trailing pulse output) and OUT (leading pulse output).

OUT

DIR

When positive direction operates When negative direction operates

Figure 4.6. Specification for Output Pulse in 90°C phase-different Pulsing Method

General-purpose input signals

This product has general-purpose input signals (IN1 - IN7) in addition to limit input and encoder input

signals.

IN1 - IN7 (General-purpose input signals)

IN1 - IN7 (general-purpose input signals) can be used to read data from I/O ports. Since these are

independent of motor control, they do not affect pulse output even during motor operation. There are 7

pins for each axis, which are used for input of positioning completion signals or alarm signals from

motor driver units as well as for general-purpose input. By software, IN1-IN6 can be switched to serve

as alarm input, positioning completion input, deceleration (decelerated stop) input, counter latch,

positioning control start input, and counter clear input respectively. The input logic can also be changed

by software.

ALM (Alarm input signal)

ALM is the input signal to detect the alarm signal from the motor driver. The input logic can be changed

by software.

INP (positioning completion signal)

INP is the signal to detect the positioning completion signal from the motor driver unit. The input logic

can be changed by software.

SD (deceleration (decelerated stop) input)

SD is a signal to detect the position at which to start deceleration. The input logic can be changed by

software.

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Carrier 8DF-13 Guida Utente Pagina 58