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10.3 Setting the block start data
10.3.1 Relation between various controls and block start data
High-level positioning
Block start data
setting items
0 : End
Da.11 Shape
1 : Continue
Da.12 Start data No.
Special start
Da.13
instruction
Da.14 Parameter
: One of the two setting items must be set.
: Set as required (Set to "–" when not used.)
: Setting not possible
–
: Setting not required (Set the initial value or a value within the setting range.)
The "NEXT start" instruction is used in combination with "repeated start (FOR loop)" and "repeated start (FOR
condition)". Control using only the "NEXT start" will not be carried out.
The "block start data" must be set to carry out "high-level positioning control". The
setting requirements and details of each "block start data" item to be set differ
according to the "
Da.13
The following shows the "block start data" setting items corresponding to various
control methods. The operation details of each control type are explained starting in
Section 10.3.2. Also refer to Section 10.4 "Setting the condition data" for details on
"condition data" with which control execution is judged.
(The "block start data" settings in this chapter are assumed to be carried out using
GX Works2.)
Block start
control
Condition
(Normal
start)
0
–
REMARK
It is recommended that the "block start data" be set whenever possible with
GX Works2. Execution by sequence program uses many sequence programs and
devices. The execution becomes complicated, and the scan times will increase.
Chapter 10 High-Level Positioning Control
Special start instruction" setting.
Simulta-
Wait start
start
neous start
1 to 600
1
2
Condition data No.
10 - 7
Repeated
Repeated
start
start
(FOR
(FOR loop)
condition)
3
4
Number of
Condition
repetitions
data No.
NEXT start
5
6
–
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