Cyclic Data Assurance - Mitsubishi Electric MELSEC iQ-R Series User Manual

Cyclic data assurance

This function assures the cyclic data assurance in units of 32 bits or station-based units.
: Assured, : Not assured
Method
32-bit data assurance
Station-based block data
assurance
Interlock program
*1 Simple Motion mode is not assured.
• PLCopen Motion control FB mode
When accessing the motion control station cyclic data using the slave label from a motion built-in program,
data is assured in label units.
• When the version of Add-on baseSystem is "1.18" or earlier, the cyclic data assurance is not supported. If
"Station-based Block Data Assurance" is set to "Enable" in "Supplementary Cyclic Settings" under
"Application Settings", the operation is performed with the setting of "Disable".
32-bit data assurance
The RWr and RWw data can be assured in 32-bit units.
■ Data assurance at the time of direct access to link devices
When link refresh target devices are accessed, the 32-bit data can be assured by satisfying the following conditions:
• The start device No. of RWr, RWw, and LW is multiples of 2.
• The number of points assigned to RWr, RWw, and LW is multiples of 2.
CPU module
Device
0H
2 words
(32 bits)
1H
2H
2 words
(32 bits)
3H
4H
2 words
5H (32 bits)
6H
2 words
(32 bits)
7H
1 FUNCTIONS
38
1.1 Cyclic Transmission
Description
Assures data in 32-bit units.
Data is automatically assured by satisfying
assignment conditions of link devices.
Assures data in station-based units.
Data is assured by enabling the station-based
block data assurance in the parameter setting.
Assures data of more than 32 bits.
Data is assured by configuring interlocks on
programs.
Link refresh
Link refresh



Motion module
RWr, RWw, LW
2 words
(32 bits)
2 words
(32 bits)
2 words
(32 bits)
2 words
(32 bits)
Direct access Direct access
to link devices to link devices
from motion
built-in
program
*1
 
*1
 
*1
 
Access to
buffer
memory


