Mitsubishi Electric GOT 1000 Series Manual page 156

(2) When time information is not obtainable from the SNTP server computer
When the GOT cannot obtain time information from the SNTP server computer due to failure of the network or
time synchronization server, it behaves as follows:
(a) When time information is not obtained at the time of powering ON the GOT from OFF, or resetting the GOT
1) Time synchronization is not performed. (Clock data of the GOT are used as they are.)
2) An error is output to the MES interface Execute Log.
3) Time query is executed to the SNTP server computer after the interval specified for Sync. Interval.
(b) When time information is not obtained once for each interval specified in Sync. Interval
1) The GOT continues its operations based on the information that was successfully obtained by time
query.
2) If the previous time query was successful, an error is output to the MES interface Execute Log.
3) Time query is executed to the SNTP server computer after the interval specified for Sync. Interval.
POINT POINT POINT
(1) When time query to the SNTP server computer is executed successfully, it can be also confirmed by the error
log.
• When succeeded in initial time query
An error code is output to the MES interface Execute Log.
• When failed in previous time query and succeeded this time
An error code is output to the MES interface Execute Log.
(2) The MES interface Execute Log can be checked on the [Working log] tab.
6.11 Working Log
(3) Precautions on the time synchronization function
(a) Synchronizing time with SNTP server computer
When [Synchronize using SNTP] is selected, an SNTP server computer is required.
Note that the SNTP server computer must have the time synchronization server function.
6 - 80 6.9 Option Setting