Time Synchronization - Mitsubishi Electric MELSEC iQ-R Series User Manual

Time synchronization

This function synchronizes the time of slave stations with the time synchronization source (CPU module of the master station).
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Setting method
The time synchronization is set with the buffer memory. ( Page 473 Time synchronization)
Set the same time zone and daylight savings time to the CPU modules of the master and local stations.
When the CC-Link IE TSN Plus module is used as the master station, do not connect time synchronization
devices whose time synchronization priority is 0 to 15.
A priority is a value that is assigned to a time synchronization device from the devices in a network to
determine the grandmaster. The smaller the value, the higher the priority.
For the priority verification method and setting method, refer to the manual of the time synchronization device.
Precautions
• If this function is used, the time setting function (SNTP client) of the Ethernet-equipped module cannot be used. (
MELSEC iQ-R Ethernet User's Manual (Application))
• If multiple CC-Link IE TSN Plus modules are mounted to a CPU module on the same base unit, set time synchronization for
only one CC-Link IE TSN Plus module. If time synchronization is set for multiple, they are overwritten by the time that is
synchronized later.
• When using the multiple CPU system configuration, the CPU module No.1 becomes the time synchronization source, even
if the control CPU of the master station and local stations is a module other than CPU No.1.
• When "Connection Device Information" is set to "CC-Link IE TSN Class B Only", use a TSN hub. If a device other than TSN
hub is used, the data link may stop for local stations and slave stations connected to the device.
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9.6 RAS