Mitsubishi Electric MELSEC-Q Series User Manual page 104

(2) Block data assurance per station
Integrity of the cyclic data is assured for each station by handshake between the CPU
module and Simple Motion module for a link refresh.
(a) Setting
Enable "Block Data Assurance per Station" in "Network Configuration Settings" of
the master station. (Refer to Section 7.4.)
Once this setting is enabled on the master station, integrity of the data for all
stations is assured for each station.
POINT
When there is a remote device station in the network, enable block data assurance
per station.
Caution
When the scan time of the CPU module is longer, the data communication between
the Simple Motion module and the slave stations may not be able to be kept
constant. If a synchronous communication error occurs at connecting the Simple
Motion module and the slave station, take measures shown below.
•Lengthen the operation cycle of the Simple Motion module.
•Shorten the scan time of the programmable controller. For how to shorten the scan
time, refer to the user's manual for the CPU module used.
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Chapter 8 FUNCTIONS
Select the checkbox.