Time Synchronization Function; Using The Sntp Time Query Result In The Programmable Controller Cpu - Mitsubishi Electric Melsec Q Series User Manual

6
FUNCTIONS

6.3 Time Synchronization Function

The time synchronization function adjusts the time of the MES interface module to be
synchronized with the time of the SNTP server computer or a programmable controller
CPU (No.1 CPU in the multiple CPU system) on the network. Time information is utilized
for job start conditions or in send data to the database.
For the time synchronization function setting, refer to the following:
Section 7.6.2 Setting items in Time synchronization setting

6.3.1 Using the SNTP time query result in the programmable controller CPU

By using the SNTP time query timing (XB) and the SNTP time query result area (buffer
memory address: 11501 to 11507), the time information acquired from the SNTP server
computer can be utilized in the programmable controller CPU.
(1) Program examples
The following are program examples where, when M0 turns ON, the time of the
programmable controller CPU is set at the SNTP time query timing (XB: ON).
6.3.1 Using the SNTP time query result in the programmable controller CPU
• When the head I/O No. of the MES interface module is "0000", it indicates that
the module is installed in slot 0 of the main base unit.
• A time error in these programs shall be equal to two scan times or less.
Figure 6.18 Program example (1)
Figure 6.19 Program example (2)
6.3 Time Synchronization Function
1
2
3
4
5
6
7
8
6
- 24