Mitsubishi Electric MELSEC iQ-R-RD75P4 User Manual page 209

Start control example
The following figure shows a control example in the normal analysis mode.
Positioning control
RD75
The first
module
Positioning start trigger
BUSY signal
[XC, XD, XE, XF]
Md.26 Axis operation status
Positioning control
RD75
The second
module
Positioning start trigger
BUSY signal
[XC, XD, XE, XF]
Md.26 Axis operation status
Positioning control
RD75
The third
module
Positioning start trigger
BUSY signal
[XC, XD, XE, XF]
Md.26 Axis operation status
(1) Turn on the positioning start trigger.
(2) The RD75 accepts the start trigger and analyzes the positioning data.
(3) The RD75 starts positioning at the inter-module synchronization cycle immediately after the analysis of the positioning data is completed. (The first and
second RD75s that have completed the analysis of the positioning data in the same inter-module synchronization cycle can start pulse output at the same
inter-module synchronization cycle immediately after the completion. The third RD75 starts pulse output at the next inter-module synchronization cycle
because the positioning data analysis crosses the inter-module synchronization cycle.)
Programs are the same as those of the normal start. For the programs, refer to the following. However, create a program as
the inter-module synchronous interrupt program.
Page 23 Program example
6 INTER-MODULE SYNCHRONIZATION FUNCTION (SIMULTANEOUS START OF MULTIPLE MODULES)
v
Inter-module
synchronization cycle
(1)
(2) (3)
Standby Analyzing
Analysis
completed
v
Inter-module
synchronization cycle
(1)
(2) (3)
Standby Analyzing
Analysis
completed
v
Inter-module
synchronization cycle
(1)
(2)
Standby
Inter-module Inter-module
synchronization cycle synchronization cycle
Position control
Inter-module Inter-module
synchronization cycle synchronization cycle
Position control
Inter-module Inter-module
synchronization cycle synchronization cycle
(3)
Analyzing
Analysis
completed
6.2 Control in Normal Analysis Mode
t
t
t
Position control
207
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