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7.5 Time Setting Function (SNTP Client)
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COMMUNICATION USING BUILT-IN ETHERNET
PORTS OF CPU MODULE
(3) Precautions
• To use the time setting function, an SNTP server personal computer (time
information server) is required on LAN.
• A delay occurs with respect to the time set in the CPU module as a result of the
time required for communication with the server. Specify the closest SNTP server
possible on the network.
• In a multiple CPU system, enable the time setting function of only the Built-in
Ethernet port QCPU No.1.
When a CPU module other than the Built-in Ethernet port QCPU No. 1 is
enabled, the clock data of the Built-in Ethernet port QCPU No. 1 is automatically
set.
• This function is available within the year range 1980 to 2079.