Parameter block appendix c – Rockwell Automation 1771-QC , D17716.5.25 SER/B SERVO POS User Manual

Page 237

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Parameter Block

Appendix C

CĆ6

17 16 15 14 13 12 11 10 07 06 05 04 03 02 01 00

-Software Travel Limit

Word 22 (Axis 1)

Word 41 (Axis 2)

Word 60 (Axis 3)

17 16 15 14 13 12 11 10 07 06 05 04 03 02 01 00

+ Software Travel Limit

Word 21 (Axis 1)

Word 40 (Axis 2)

Word 59 (Axis 3)

inch

metric

decimal

point

decimal

point

inch

metric

decimal

point

decimal

point

Negative software travel limit. An

axis position value in inches or

meters, BCD format.

Positive software travel limit. An

axis position value in inches or

meters, BCD format.

CAUTION: If programmed values are zero, there are

no software travel limits. To guard against damage to

equipment, exercise caution when operating an axis

without software travel limits.

17 16 15 14 13 12 11 10 07 06 05 04 03 02 01 00

Backlash Takeup Distance

Word 23 (Axis 1)

Word 42 (Axis 2)

Word 61 (Axis 3)

inch

metric

Sign:

0 = +

1 = -

decimal

point

decimal

point

Distance axis overshoots when initial

approach to endpoint is from

direction opposite that specified in bit

17.

Axis approaches all

endpoints moving in

the direction specified

by the sign (bit 17).

17 16 15 14 13 12 11 10 07 06 05 04 03 02 01 00

Offset

Word 24 (Axis 1)

Word 43 (Axis 2)

Word 62 (Axis 3)

inch

metric

Sign:

0 = +

1 = -

decimal

point

decimal

point

Offset value, inches or

millimeters, BCD format

17 16 15 14 13 12 11 10 07 06 05 04 03 02 01 00

FE Reduction, Tach Conversion Factor

Word 25 (Axis 1)

Word 44 (Axis 2)

Word 63 (Axis 3)

BCD following error reduction value (0-99.9%)

0 = 0

1 = 0.0625
0 = 0

1 = 0.125
0 = 0

1 = 0.250
0 = 0

1 = 0.500

11050

Total value is the sum of the

selected values.

Used if full scale analog output voltage is greater

than tachometer voltage for a given rpm. Refer to

the tachometer calibration procedure in chapter 9.

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