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).
No.0 No.1
The MELSECWinCPU module cannot use this function.
Setting method
The time synchronization is set with the buffer memory. ( Page 256 Time synchronization)
Set the same time zone and daylight savings time to the CPU modules of the master and local stations.
When the RJ71GN11-T2 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 RJ71GN11-T2s are mounted to a CPU module on the same base unit, set time synchronization for only one
RJ71GN11-T2. 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.
No.2
1
1 FUNCTIONS
75
1.5 RAS