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10 - 11

MELSEC-A

10 ADVANCED POSITIONING CONTROL

10.3.4 Wait start

In a "wait start", the "condition data" conditional judgment designated in "

Da.13

Parameter" is carried out for the positioning data set in " Da.11 Start data No.". If the
conditions have been established, the "start block data" is executed. If the conditions
have not been established, the control stops (waits) until the conditions are
established.

Section (2) shows a control example where the "start block data" and "positioning data"
are set as shown in section (1).

(1) Setting examples

(a) Start block data setting example

Axis 1 start

block data

Da.10 Shape

Da.11 Start

data No.

Da.12 Special

start command

Da.13

Parameter

1st point

1: Continue

2: Wait start

2nd point

1: Continue

0: Normal start

–

3rd point

0: End

0: Normal start

–



* The "condition data Nos." have been set in " Da.13 Parameter".

(b) Positioning data setting example

Axis 1 position-

ing data No.

Da.1 Operation pattern

01: Continuous positioning control

3 00:

Positioning

complete



11: Continuous path control

12 00:

Positioning

complete



50 00:

Positioning

complete



(2) Control examples

The following shows the control executed when the "start block data" of the 1st
point of axis 1 is set as shown in section (1) and started.

<1> The conditional judgment set in "condition data No. 3" is carried out before

execution of the axis 1 "positioning data No. 1".

Conditions established

Execute positioning data No. 1, 2, and 3

Go to <2>.

Conditions not established

Control stops (waits) until conditions are

established

Go to <1>.

<2> Execute the axis 1 "positioning data No. 10, 11, 12, and 50" and stop the

control.