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Q28: do not have clock function? Why is the clock inaccurate?
A28:
XD/XL series PLC clock function is optional, and if you want to buy the PLC with clock
function, please confirm when purchasing. Otherwise, the default PLC when it leaves factory
does not have clock function.
If you use a PLC with clock function, check whether the value in register SD13-SD19 is
decimal. If not, you need to convert it into decimal through BIN or TRD instructions.
There are some errors in the clock of XD/XL series PLC. The error is about ±5 minutes per
month. Please calibrate it by HMI or directly in the PLC program.
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