Chapter 5 Positioning Instructions
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5.3.16 Inching Start Function Block
•This instruction (APM_INC) is for the movement at the inching speed set up by the positioning
Origin/manual parameter in the instruction. For details about inching operation, see 3.1.12.
(1) Inching Start Instruction (APM_INC)
Form Variable Data Type Description
INCH_VAL
DINT
Inching Distance
● Setting range: -2,147,483,648 ~ 2,147,483,647
(a) Function
•This instruction provides inching operation reference to the XGB internal positioning.
•At the rising edge of the input condition, the axis designated as AXIS moves by the distance and
speed set up by the INCH_VAL and positioning parameter, respectively.
(2) Sample Instruction
(a) Sample Program
(b) Program Operation
•At the rising edge of the inching start signal used as the reference signal for inching start, the
positioning X-axis moves by 150 at the inching speed in Incremental coordinate set up in the
positioning Origin/manual parameter.
•At inching start, if the axis is in operation or being prohibited from output, error codes 401 and 402,
respectively, are outputted to STAT and does not operate.
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