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4-10.RTC Instructions
※1: To use the instructions, The Model should be equipped with RTC function;
※2: There are some errors in the clock of XD/XL series PLC, which is about ±5 minutes per
month. It can be calibrated regularly by HMI or in the PLC program.
4-10-1.Read the clock data [TRD]
1. Instruction Summary
Read the clock data:
Read the clock data: [TRD]
Normally ON/OFF,
rising/falling edge
Register address to save clock data
3. Suitable Soft Components
*Notes: D includes D, HD; TD includes TD, HTD; CD includes CD, HCD, HSCD, HSD;
DM includes DM, DHM; DS includes DS, DHS.
The current time and date of the real time clock are read and stored in the 7 data devices
specified by the head address D.
Read PLC’s real time clock according to the following format.
Read the special data register (SD013~SD019).