6 Introduction of Functions
34
FX3U-ENET-ADP User's Manual
6.2 Details of functions
6.2.5 Time setting function
The Ethernet adapter collects time information from a time information server connected to LAN (SNTP
server), making it possible to set the PLC main unit time automatically.
The time setting function queries the time information server to ask the time at the specified timing.
Also, it sets the time sent from the time information server as clock data of the main unit.
The time setting operation is executed based on the following timing.
• At PLC main unit power ON.
• Execution at a specified time interval (Execution interval)
• Execution at a specified time (Execution time)
• At special auxiliary relay ON.
*1
*1. The time setting function is valid when the special M bit (CH1: M8411, CH2: M8431) is ON. For details
of the special M bit, refer to Appendix A.
For operation of GX Works2, refer to Section 8.3.
Time setting function settings
*2. Set the SNTP server IP address after consulting a network administrator (the person who plans the
network and manages IP addresses).
*3. One of the two options must be selected.
Setting Description
SNTP Function Setting Select whether or not to use the time setting function.
SNTP Server IP Address
*2
Specify the SNTP server IP address.
Time Zone Specify the time zone (GMT-12:00 to GMT+13:00) in which the time is to be synchronized.
Execute time setting at turn ON Select whether or not to execute the time setting function when the PLC main unit is powered ON.
On-error Action
Select whether to stop or continue when a time setting error occurs when the PLC main unit is
powered ON.
Execution Interval
*3
Select to execute the time setting function at a specified time interval. (1 to 1440 min)
Execution Time
*3
Select to execute the time setting function at a specified time. (in increments of 30 minutes)
Port No. 123 fixed value
FX3U/FX3UC PLC
FX
3U-ENET-ADP
SNTP server
Server time is obtained
Time inquiry
Time setting
To Next Page
Loading...
