Assurance Of Cyclic Data Integrity - Mitsubishi Electric MELSEC-Q Series User Manual

8.3.4 Assurance of cyclic data integrity

The cyclic data integrity can be assured in 32-bit units or for each station.
(1) 32-bit data assurance
Method
Assures data in 32-bit units.
32-bit data Data is automatically assured by
assurance satisfying assignment conditions of link
devices.
Assures data in station-based units.
Block Data
Data is assured by enabling the station-
Assurance per
based block data assurance in the
Station parameter setting.
: Assured
: Not assured
The RWr and RWw data can be assured in 32-bit units.
To enable 32-bit data assurance, disable block data assurance per station.
Project window [Parameter]
IE/MELSECNET] [CC IE Field Configuration Setting] button
Configuration] [Supplementary Setting]
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 stations, 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.
Description
[Network Parameter]
8 - 12
Chapter 8 FUNCTIONS
Assurance
Link Direct access to
refresh link devices
[Ethernet/CC
[CC IE Field
Clear the checkbox.
Access to buffer
memories