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6 Ethernet COMMUNICATION FUNCTIONS
6.4 Time Setting Function
6.4
Time Setting Function
Time information is collected from the time information server (SNTP server) connected on the LAN at the specified timing,
and the time in the C Controller module is set automatically.
• The time information acquired from the time information server is Coordinated Universal Time (UTC). The
acquired UTC time information is adjusted according to the time zone setting of the CPU module, and is set
to the CPU module.
• In the multiple CPU environment, set the time only for the CPU No.1. If the time is set for the CPU modules
other than the CPU No.1, the clock data in the CPU No.1 is set automatically to CPU No.2 to No.4.
Execution timing of time setting
The time setting is performed at any of the following timing.
• At turning the power OFF and ON, or resetting the C Controller module
• At specified time intervals
• At specified time
• At arbitrary timing using a program
*1
*1 Acquire the clock information using the VxWorks function (sntpcTimeGet), and then execute the C Controller module dedicated function
(CCPU_SetRTC).
Setting method
Set "Time Setting" under "Application Settings". (
Precautions
■
Time information server
Install an SNTP server on the LAN to be connected.
■
Delay by communication time
The time set in the module may be delayed by the time required to communicate with the SNTP server. For a high-accuracy
time setting, specify an SNTP server on the network that is as close to the module as possible.
■
Available period
The period within the range from 1980 to 2079 can be used.
Summary of Contents for MELSEC iQ-R C R12CCPU-V
Page 1: ...MELSEC iQ R C Controller Module User s Manual Application R12CCPU V ...
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Page 23: ...1 EXECUTING PROGRAMS 1 3 I O Access Timing 21 1 MEMO ...
Page 32: ...30 3 MEMORY CONFIGURATION OF C Controller Module 3 4 Files MEMO ...
Page 257: ...I 255 MEMO ...
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