Rockwell Automation 1771-QC , D17716.5.25 SER/B SERVO POS - Manual (Page 118)

Formatting and Interpreting Data Blocks
Chapter 7
7Ć36
CAUTION: If programmed values for software travel limits are
zero, there are no software travel limits. To guard against
damage to equipment, use caution when operating an axis
without software travel limits.
Figure 7.25
Software Travel Limit Words
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)
Negative software travel limit. An axis
position value in inches or meters, BCD
format.
11047
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
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.
decimal
point
decimal
point
inch metric
decimal
point
decimal
point
Backlash Takeup
Backlash takeup helps minimize axis positioning inaccuracy caused by
mechanical play in the axis positioning system. Word 23 (42, 61) is the
backlash takeup word (Figure 7.26).