Rockwell Automation 1771-QB Linear Pos. - Manual (Page 106)

Formatting Module Data (WRITES)
Chapter 7
7Ć27
Figure 7.36
Jog Rate (Low and High) Words
50077
Low jog rate,
BCD 99.99 ips or 999.9 mmps max
Binary 327.67 ips or 3276.7 mmps max
(Must be v the high jog rate.)
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High jog rate,
BCD 99.99 ips or 999.9 mmps max
Binary 327.67 ips or 3276.7 mmps max
(Must not be higher than the greater of either of
the analog calibration constants.)
Important: The low jog rate must be lower than or equal to the high jog rate.
Both rates must be lower than the greatest of either maximum velocity, as
specified by the analog calibration constants.
Reserved (words 29, 30 and 58, 59)
Words 29, 30, 58 and 59 are reserved for future use. You must set them to zero.
You use the setpoint block to define multiple setpoint moves. If you only need
one setpoint for an axis, you can define it in the command block and not use the
setpoint block at all.
You would normally define one setpoint block for each axis, but if your
application requires that both axes use the same setpoint moves–i.e., both axes
move in parallel–you can specify both axes in the setpoint block control word
and use a single setpoint block.
Each setpoint block uses two words of overhead plus five words for each
setpoint. Because the setpoint block can define from 1 to 12 setpoint moves for
each axis, a setpoint block can be from 7 to 62 words long.
Each setpoint move defines the target axis position, velocity, acceleration, and
deceleration. Figure 7.37 shows setpoint block word assignments.
Setpoint Block