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60
4–1
START
Execution of positioning actions begins when the program turns ON the
START command bit, bit 00 of IR word n (effective on signal’s rising edge).
The actions are executed in order from either the initial positioning action
designated in the DM area or that designated in the IR area, depending on
another setting you make in the IR area. Positioning actions are executed in
order until a “single” or “bank end” positioning action is reached, at which
time START is again required in order to begin execution of positioning ac-
tions. (For an explanation of “single” and “bank end” positioning actions, see
Completion Codes under Section 4–1–1 below.)
When a bank end positioning action is reached or when the last positioning
action (#19) has been performed, the initial positioning action designated in
the DM area is performed next. The initial positioning action and completion
codes (i.e., single, pause, continuous, bank end, and extended) are de-
scribed later in this section.
4–1–1
DM Area Settings
Words 1000 to 1999 of the DM area of the PC are used as data storage
areas for the Position Control Unit, storing data such as initial positioning ac-
tion numbers, initial speed numbers, speed data, acceleration/deceleration
data, position data, completion codes, dwell times, and output codes. Before
positioning actions can be executed, you must make all of the necessary
data settings in the DM area. (For an explanation of data configuration, refer
to
Section 3–4.)
DM word m, bits 07 to 00
Set to a value between 00 and 19. This number is used for the following:
•
Initial START after turning on the Unit (if bit 01 of word n is 0)
•
START after bank ends
•
START after completion of positioning action #19
If bit 01 of IR word n is set to 1, the initial positioning action number desig-
nated in the IR area is used for the initial START after turning on the Unit,
allowing for a different starting point for positioning system initialization.
Initial positioning action number
Initial speed number
x10
1
x10
0
(m = 1000 + 100 x unit number)
m
11 08 07
00
DM word m, bits 11 to 08
Set to a value between 0 and F (hex). An initial speed number of 0 indicates
a speed of 0. All the other speed numbers set here refer to the speeds set in
DM words m+82 through m+96.
Initial Positioning Action
Number
Initial Speed Number
START