Rockwell Automation 1771-QB Linear Pos. - Manual (Page 107)

Formatting Module Data (WRITES)
Chapter 7
7Ć28
Figure 7.37
Setpoint Block Word Assignments
50078
Up to
62
words
Setpoint block control word
Incremental/absolute word
(MS) Setpoint position
(LS) Setpoint position
Local velocity
Local acceleration
Local deceleration
(MS) Setpoint position
(LS) Setpoint position
Local velocity
Local acceleration
Local deceleration
(MS) Setpoint position
(LS) Setpoint position
Local velocity
Local acceleration
Local deceleration
Move #N
Move #2
Move #1
: :
:
The module internally maintains information on each of the 12 setpoints
controlled by the setpoint block. On powerup or after a reset command each of
these internal setpoints is disabled. The programmable controller must redefine
one or all of these setpoints through the setpoint block. Therefore, the size of
the setpoint block depends on the number of setpoints to be modified.
The first word in the setpoint block is the setpoint block control word. This
control word identifies the block as a setpoint block, specifies that it applies to
axis 1 or 2, and gives the number of setpoint moves contained in the block (up
to 12).
Once the setpoint block is successfully processed by the module, you can
command movement to selected setpoints in auto mode. You do this by
specifying the setpoint number (1 to 12) in the command block.
Moves to any setpoint are only possible in auto mode. If you select manual
mode, only jog moves are possible.
The setpoint position is in metric or inches, depending on the option which you
selected in the parameter block. The maximum range for programmable setpoint
position is -799.900 to +799.900 inches (-7999.00 to +7999.00 millimeters).