Created Date: June 27,2008

Created by: AZRoger

Mike,

I have a couple questions to clarify what you'd like to do. I'll number them just to make it easier to refer to latter. They are not in any particular order.

1) You mentioned 8 words for the log entries. I only counted 7 (mon,day,year,hrs,mins,secs,fault-code). Is there a serial number or something in addition?

2) Are you trying to format 8 words (16 bytes) into some sort of shorter string with punctuation added?

3) What display are you using?

4) What CPU? (Important for knowing what instructions are available.)

5) Is just building a BCD string in memory enough?

I'll be glad to help but I'd like more guidance before I go off in the wrong direction.

Roger

Created Date: June 27,2008

Created by: elevmike

It's the DL06 LCD display. Authough the display is limited, it works very well for our purposes.

The 7 words are, copied from V7766 - V7774 (Date & time) to V10000 - V10006. The 8th word is the fault code and would be placed in v10007.

The next fault would be logged into V10010-v10017, and so on...

The idea is to provide a momentary button that would activate an input on the plc. That input would then activate the scrolling display of the logged faults.

On the display line 1 would be the date & time. Line 2 would be the fault code.

I have everything worked out but displaing the full date & time on line 1. The problem seems to be that you can only display one Vmem value on each line?? I need to know if what I'm trying to do is actually impossable, or if there's a workaround.

Thanks, Mike

Created Date: June 27,2008

Created by: milldrone

Mike,

Check out "Vprint " in the ascii instructions.

// Rung 29

// Address 288

#BEGIN COMMENT

"upon loss of phase the time will be written to v2000= number of vmem should be " "8 " " "

" v2001 thru v2010=rest of time data "

" "

" "

" "

" "

" "

#END

STRND X12

VPRINT K0 V2000 "_time:24 "

// Rung 29

// Address 288

#BEGIN COMMENT

"upon loss of phase the time will be written to v2000= number of vmem should be " "8 " " "

" v2001 thru v2010=rest of time data "

" "

" "

" "

" "

" "

#END

STRND X12

VPRINT K0 V2000 "_time:24

Vaughn

Created Date: June 27,2008

Created by: franji1

I once wrote a subroutine that converts a BCD number from 1-12 into a 3 character month, with a trailing space, into 2 V memory locations, but I don't have that program any more.

Basically, the subroutine compared the month value to K1, then did a LDD K206E614A OUTD V2000. That value in the LDD is the ASCII characters in Hexadecimal (space)naJ. I think it needs to be backwards due to the Endinness of the processor, but you can play around with it in the LCD display (it may need to be K6E204A61 n(space)Ja). Do NOT just use DirectSOFT Data View, but use the actual LCD instruction to play with the character ordering.

The code would look like

SBR K100

STRE V1400 K1

LDD K2063614A // Jan

OUTD V2000

STRE V1400 K2

LDD K20(beF in hex) // Feb

OUTD V2000

STRE V1400 K3

LDD K20 (raM in hex) // Mar

OUTD V2000

// and so on

RET

Created Date: June 27,2008

Created by: AZRoger

Elevmike,

I agree with Milldrone that VPRINT is the key to a solution.

On page 10â€"30 of the DL06 Micro PLC User Manual, 3rd Edition Rev. A (the online version) there's an example which shows VPRINT used to construct two 16 byte strings of ASCII characters. It then shows each on its own line on the display.

It doesn't say explicitely that VPRINT will accept Pointer references to VMEM. If it doesn't, then it would be easiest to copy your 8-word fault record to a fixed place to work from. That may be easier than updating a bunch of pointers anyway.

I'd bet dollars to donuts that the built in Date and Time functions ONLY work against V7766 - V7774. These addresses are protected from changed via Dataview. They are probably protected from changes by ladder programs too. So you'll have to use VPRINT with lots of parameters to pick up each part of the date and time separately. And you'll have to put in your own punctuation. But it's doable.

Roger

Created Date: June 27,2008

Created by: franji1

Originally posted by AZRoger:

I'd bet dollars to donuts that the built in Date and Time functions ONLY work against V7766 - V7774.

I think it's worse than that - I bet it works against the internal real time chip that gets posted to V7766-V7774 (this is why there are DATE and TIME instructions, not just the ability to write to these V locations, which does not work).

Created Date: June 28,2008

Created by: elevmike

This is terrible...

To format the month takes 12 lines of code

To format the day takes 31 lines of code.

To format the year takes 99 lines of code, (I guess I could skip 00-07)

To format the hours takes 24 lines of code.

To format the minutes takes 60 lines of code.

To format the seconds takes 60 lines of code.

Total = 286 lines of code for formatting the date & time.

062608 23:10:58

(June 26, 2008 at 11:10:58 pm.)

It works, but there has to be a better way??

Mike.