Rockwell Automation 1746-HSRV SLC Servo Control Module User Manual User Manual

Page 157

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Publication 1746-6.1.2 - July 2000

9-14 Programming System Variables

Word 2 Discrete Bit Status Specifications SLC Servo Module

1

s = Slot number for the SLC Servo Module

Bit Specifications

Location

1

Description

In-Position

I:s.2/0

This bit is set when the actual position for the axis is within the in-position
band of the end position of the currently executing move. The in-position
band must be greater than or equal to the system’s standing following error
but smaller than the magnitude of the position move. If the in-position band
is not set to a large enough value, the in-position bit is not set for the move.
If the in-position band is set to a value that is too large, the in-position bit
could turn on sooner than you want.

Move Complete

I:s.2/1

The move complete bit is set when an interpolated move is no longer being
interpolated. The IMC Classic product line called this the NOSETTLE point.

Axis Stopped

I:s.2/2

A 1 in this bit indicates the axis is at rest.

Axis Held

I:s.2/3

This bit is set when the axis is being held by the Hold Move bit.

Accelerating

I:s.2/4

This bit is set when an interpolated move is accelerating.

Decelerating

I:s.2/5

This bit is set when an interpolated move is decelerating.

Reserved

I:s.2/6 through I:s.2/7

FIN[1] State

I:s.2/8

These bits reflect the current state of the corresponding fast input (FIN [1]).

FIN[2] State

I:s.2/9

These bits reflect the current state of the corresponding fast input (FIN [2]).

FIN[3] State

I:s.2/10

These bits reflect the current state of the corresponding fast input (FIN [3]).

FOUT State

I:s.2/11

This bit reflects the current state of the fast output (FOUT).

Reserved

I:s.2/12 through I:s.2/
15

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