start up test

walters · Apr 29, 2005

hi all, when i start up my mitsubishi FX0 PLC i first want it to test the lamps that signal any error or when proces is in stop or run but i cant get it to work

http://img260.echo.cx/my.php?image=vbopstart5jc.png

i saw its not very clear what i made so i shal tell what i have used:
M1
M2
T10
set
res(reset)
lamp

but what have i done wrong cause my timer keeps on running.
i programmed it to run 10 sec and then switch on but when its at 10 sec. he starts again at 0
thx in advance
regards walters

panic mode · Apr 29, 2005

it does work, your eyes are too slow...
the output is on for one single scan, than it's off for 10 seconds
and this sequence repeats.

panic mode · Apr 29, 2005

what do you want with it?
turn output on after 10 sec. and keep it on?
turn it on after 10 seconds and turn it off by...?

Eric Nelson · Apr 29, 2005

The problem is that you are resetting M1, which restarts the timer. Just eliminate the RST M1 at the end. M1 is not retentive, so it will be turned off when power is cycled.

Since you only want to run the timer once at startup, use the RUN contact (M8000) to enable your timer. Try this:



|   M8000              T10

|----] [-------------( 10s )

|

|    T10 

|----]/[------------( LAMP TEST )

|

|    T10

|----] [------------( TEST DONE )

-Eric

Note to Phil: The

 code doesn't survive a 'preview' (bet you already knew that!)...

Terry Woods · Apr 30, 2005

Eric...
I just previewed a copy of your ladder, with the [LADDER] codes a dozen times... I never lost the [LADDER] codes.



|   M8000              T10

|----] [-------------( 10s )

|

|    T10 

|----]/[------------( LAMP TEST )

|

|    T10

|----] [------------( TEST DONE )

EDIT: The ladder codes are still there when I edit after posting.

Eric Nelson · Apr 30, 2005

Terry Woods said:



 

I should have said the fomatting doesn't survive. Notice above that just by quoting your post, the spacing of the element names disappears. At least on my end... 

 

The purpose of the  tags is to preserve all 'space' characters.

 



 

-Eric

Terry Woods · Apr 30, 2005

Yeah... that part I know about.

I write all my ladder in Word, in Courier, then cut-n-paste. It's the only way that I know of.

start up test

walters

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panic mode

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panic mode

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Eric Nelson

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Terry Woods

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Eric Nelson

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Terry Woods

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