Rockwell Automation 1771-QC , D17716.5.25 SER/B SERVO POS - Manual (Page 111)

Formatting and Interpreting Data Blocks
Chapter 7
7Ć29
Figure 7.19
Rapid Traverse Rate Word
17 16 15 14 13 12 11 10 07 06 05 04 03 02 01 00
Rapid Traverse Rate
Word 12 (Axis 1)
Word 31 (Axis 2)
Word 50 (Axis 3)
Multiplier
001 = x 10 -1
000 = x 10 0
010 = x 10
100 = x 10
110 = x 10
111 = x 10
1
2
3
4
inch
metric
This BCD value (0.999 ipm or
19.99 mmpm max) times the
multiplier is the rapid traverse rate.
11041
decimal
point
decimal
point
The rapid traverse rate is limited by several parameters. The servo
positioning assembly detects a programming error and inhibits axis
motion when you enter a rapid traverse rate that violates any of the
following formulas:
RR < 12,500 x FR x FM x EL (Table 7.A, code 15)
1.28
RR < 1.5 x 10 7 x FR x FM (Table 7.A, code 14)
1.28
RR < 4 x 10 6 x FR x D/A (Table 7.A, code 12)
RR < 6.5 x 10 7 x FR x IG (Table 7.A, code 13)
1.28
Where the following are parameters you enter:
RR = rapid traverse rate
FR = feedback resolution
FM = feedback multiplier (1, 2, or 4)
EL = encoder lines per revolution