1. When the date system is selected for the timing of time switch.

You can set T1,T2 anytime from 00:00:00 to 23:59:59. If you set T1 or T2 at 24:00:00, it means that you haven’tset the ON time or OFF time.(If you set T1 to 24:00:00, it means that you haven’t set ON time).

On the basis of this,we can set some special time intevals which haven’t been set in the selected items by using Inter-relays and Logic interlock.Such as that there is no item of the folloing.

6:00 on monday ,ON and 8:00 on Tuesday, OFF

How can we get the logic result of the above on the MiniPLC panel? Firstly, you should select MO ,and set it as follows.

If only ON time or OFF time is set, the changes of output status are as follows:

For example, ON : 5:00 every Sunday

OFF: 8:00 every monday

4. When the week system is selected for the timing of time switches:

The interval from Monday to Sunday is defined as a circle (MO is the start point, and SU is the end point).In one time interval,it is not allowed to set the start point after the end point.It is OK to follow the Sequence of MO,TU,WE,TH,FR,SA,SU, Please be informed the following definition.

MO: Monday MO-SU : every day from Monday to Sunday

TU : Tuesday MO-TH : every day from Monday to Thursday

WE : Wednesday MO-FR : every day from Monday to Friday

TH : Thursday MO-SA : every day from Monday to Saturday

FR : Friday FR-SU : every day from Friday to Satuday

SA : Saturday SA-SU : every day from Satuday to Sunday

SU : Sunday

- As for the case that only OFF time is only set without ON time, e.g. it is only set to be OFF at 5:00 from Monday to Thursday, and MiniPLC can turn OFF the output after 5:00 everyday from MO - TH, as to when it is going to be ON, it depends on other factors (the original status will be maintained for Friday, Saturday and Sunday).

5. Whether the date system or the week system is selected, the time intervals for the time of the same date should be arranged in chronological order, for example:

6. When the week system is selected, if ON is set at 8:00 and Off is set at 9:00 of MO~ TH, FR,SA and SU will maintain the former status, ie., the original ON status will be kept as ON and the original OFF status will be kept as OFF.

7. When you program by using LCD board, having selected Week system, it is only neccessory to set T1 and T2, and it is meaningless to set D . And it is neccessory to set D when you have selected Day system. D is the setting of data, T1 is the setting of ON time,and T2 is the setting of OFF time.

8. Clock hold circuit

For MiniPLC, when there is a power failure or a power cutting off, the internal clock can continue to run. The time that MiniPLC can maintain the internal clock to run depends on the temperature of racks, and when the temperature of racks is 25 Cdegree, the clock can continue the normal operation more than 100 hours.

9. Conflict between time intervals:

When using the time intervals to set the ON/OFF time for the clock, the clock switch will make the output ON at the ON time unless it has already been ON, and the clock switch will make the output OFF at the OFF time unless it has already been OFF.

10. Accuracy of RT clock:

The accuracy of RT clock can reach 1s. The job with duration less than 1 minute can easily be done only by using one block in MiniPLC and is avoid in other preducts of the same type. This function is applicable to the control related to time, e.g. ringing bell for classes in school and work in factories, timed startup and shut-down of PLCs, etc.