Daylight Savings Time RSLogix500

[OkiePC]

Where I have Red Lions, I use SNTP services and, if needed, push that data into the PLC clock registers.

I also make the time user editable (rights restricted) if the system isn't networked.

 

[Nengchue]

error in program

I was just about to use the code because we have problem with a new counting that is time base. As I was going the the program, I notice that there is an error in the program. In subroutine, DOY, rung 5 is duplicate of rung 4. There are two checks for May and none for June. Just in case anyone is using, you may want to update this.

 

[mcoll@Rendac]

DSTAdjustment for Studio 5000

Does anyone have an exemple of how to activate the DaylightSavingTime option automatically when a button is pressed on the HMI or on a timed event, maybe with a SSV instruction or something. I have found the Attribute Name: DSTAdjstment in the SSV instruction, but I am not sure how to make it work yet.

The PLC will be stand alone and not linked with a computer or any connection other then the PLC and HMI.

Can anybody help me on this one?

I have tried this but it does not work:

XIC(HMI_CHANGE_CLOCK)SSV(WallClockTime,,DSTAdjustment,Apply_DST[0]);

 

[daba]

Does anyone have an exemple of how to activate the DaylightSavingTime option automatically when a button is pressed on the HMI or on a timed event, maybe with a SSV instruction or something. I have found the Attribute Name: DSTAdjstment in the SSV instruction, but I am not sure how to make it work yet.

The PLC will be stand alone and not linked with a computer or any connection other then the PLC and HMI.

Can anybody help me on this one?

I have tried this but it does not work:

XIC(HMI_CHANGE_CLOCK)SSV(WallClockTime,,DSTAdjustment,Apply_DST[0]);

Have you set up the DST adjustment to the minutes you want to adjust it by ? Usually 60, but there are a couple of time zones where DST adjusts by 30.

Here's what I would do, note the ONS instructions so it doesn't do it every scan....

Use Instruction Help, and you will see that DST_AdjustMinutes is an INT tag, and DST_Enable is a SINT...

 

[mcoll@Rendac]

Thanks.

I was missing the ApplyDST part.
You have been a great help in this.