Rockwell Automation 1771-QB Linear Pos. - Manual (Page 92)

Formatting Module Data (WRITES)
Chapter 7
7Ć13
Examples: ZeroĆPosition Past the End of the Transducer
The next two examples show the origin past the fully extended position.
Figure 7.13
ZeroĆPosition Past the End of the Transducer Head
ZeroĆposition = +250.000
Positive Limit = +200.0
Negative Limit = +100.0
Negative
Direction
Neg.
Limit
+100
Origin
0 +250
50017
Pos.
Limit
+200
ZeroĆposition = -250.000
Positive Limit = -100.0
Negative Limit = -200.0
Positive
Direction
Pos.
Limit
-100
Origin
0 -250
50018
Neg.
Limit
-200
InĆPosition Band (words 11 and 40)
The in-position band is the area around an endpoint where the in-position bit
turns on. An endpoint can be the result of a setpoint or motion segment move or
a jog. The axis is in-position if:
the axis feed is complete (i.e., desired velocity is zero)
the following error has closed to within the in-position band
Figure 7.14
InĆPosition Band
50062
Position
InĆPosition band
Endpoint