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Chapter 4. PLC Program
14) STEP-
(1) Definition
The X/Y axis -direction absolute position movement(STEP-) application command executes a
-direction absolute position movement function by a designated velocity, completes the
execution of -direction absolute position movement by starting a command via a rise edge
input, and outputs the completion of execution.
--- An absolute position value can be designated by using a P variable or L variable.
--- A velocity value can be designated by using an F variable or L variable.
--- When using an L variable as an absolute position designation value, the designated
address is used as an X axis position value and the next address is used as a Y
axis position value.
The output is turned ON after completing the execution of a STEP- application command,
and is reset(OFF) during movement by another movement command.
(2) Sequence and timing chart
LOAD X0.0
STEP- P0 F0
OUT Y0.0
X0.0
STEP-
REQ OUT
X0.0 Y0.0
2000
Y0.0
P0
POS
VELF0
CUR-Y
POSITION
?
P0_X
1234
-P0_Y(-5678)
F0
2000
POSITION MOVE
CURRENT
VELOCITY
?
?
P0_Y
5678
CUR-X
POSITION
? -P0_X(-1234)POSITION MOVE
Example of use: -- STEP- P0 F0 -- STEP- L0 F0
-- STEP- P0 L10 -- STEP- L0 L10
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