Mitsubishi Electric MELSEC-L LD75D, User Manual

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461
CHAPTER 10 HIGH-LEVEL POSITIONING CONTROL
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10.3
Setting the Block Start Data
10.3.1
Relation between various controls and block start data
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] Special
start instruction" setting.
The following shows the "block start data" setting items corresponding to various control systems. The operation
details of each control type are explained starting in Block start (normal start) (

Page 462, Section 10.3.2). Also
refer to

Page 470, Section 10.4 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.)

: One of the two setting items must be set,

: Setting not possible,

: Setting not required
*1
*1 Setting value invalid Use the initial value or a value within the setting range.
*2 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.
Remark
It is recommended that the "block start data" be set whenever possible with GX Works2. Execution by program uses many
programs and devices. The execution becomes complicated, and the scan times will increase.
Block start data setting items
High-level positioning control
Block start
(Normal start)
Condition
start
Wait start
Simultaneous
start
Repeated start
(FOR loop)
Repeated start
(FOR condition)
NEXT
start
*2
[Da.11] Shape
0: End
      
1: Continue       
[Da.12] Start data No. 1 to 600
[Da.13] Special start instruction 0 1 2 3 4 5 6
[Da.14] Parameter  Condition data No. No. of repetitions
Condition data
No.
