Rockwell-automation 1771-QB Linear Pos. Uživatelský manuál stáhnout pdf (Strana 93)

Formatting Module Data (WRITES)

Chapter 7

714

If you leave the in-position band undefined (at zero), the module automatically

defaults to twice the value of the position resolution. For one circulation, this

would be 0.004 inches.

Figure 7.15

InPosition

Band W

ord

50006

This value times two is the inposition band,

BCD or binary

9.999 inch or 99.99 mm max

15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 00

PID Band (words 12 and 41)

If the axis is within the PID band and the desired velocity is zero, the module

enables the integral and derivative components for final positioning of the axis.

(See Chapter 2.) If the PID band is programmed to zero, the integral and

derivative terms remain disabled.

Figure 7.16

PID

Band

50063

Position

PID band

Endpoint

The maximum value of the PID band word is 9.999 inches or 99.99 mm.

1 2 ... 88 89 90 91 92 93 94 95 96 97 98 ... 225 226

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Rockwell-automation 1771-QB Linear Pos. Uživatelský manuál Strana 93