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It does seem a little strange to have a Red Icon with the word Off to turn On the track power and then a Green Icon with the work On to turn Off the track power.

I am afraid the logic beats this old brain, then it does not take much these days:-((

Thanks for pointing it out.

Peter


--
Peter Prewett, Tumut, NSW, Australia

Peter,

Red icon with the word OFF - means the power is off - Those who are
colour blind cannot see the difference between red and green. So Green
Icon with ON shows the power is ON.

Say G'Day to Martin Canteroz-Pas there in Tumut.

Gerry


On 10/10/2016 8:28 PM, Peter Prewett pprewett@...
[jmriusers] wrote:

It does seem a little strange to have a Red Icon with the word Off to
turn On the track power and then a Green Icon with the work On to turn
Off the track power.

I am afraid the logic beats this old brain, then it does not take much
these days:-((

Thanks for pointing it out.

Peter

--
Gerry Hopkins MMR #177 FNMRA
Great Northern Downunder




NMRA Australasian Region
Contest & AP Chairman
Web Administrator

In addition to Gerry’s comments, hovering the mouse over button displays a tooltip “Layout power On. Click to turn off.” if the power is on, and “Layout power Off. Click to turn on.” if the power if off.

On Oct 10, 2016, at 5:57 AM, Gerry gerrymmr@... [jmriusers] <jmriusers@...> wrote:

Peter,

Red icon with the word OFF - means the power is off - Those who are
colour blind cannot see the difference between red and green. So Green
Icon with ON shows the power is ON.

Say G'Day to Martin Canteroz-Pas there in Tumut.

Gerry

On 10/10/2016 8:28 PM, Peter Prewett pprewett@... <mailto:pprewett@...>
[jmriusers] wrote:

It does seem a little strange to have a Red Icon with the word Off to
turn On the track power and then a Green Icon with the work On to turn
Off the track power.

I am afraid the logic beats this old brain, then it does not take much
these days:-((

Thanks for pointing it out.

Peter

--
Gerry Hopkins MMR #177 FNMRA
Great Northern Downunder
<>

<>

NMRA Australasian Region
Contest & AP Chairman
Web Administrator
<>

[Non-text portions of this message have been removed]

[Non-text portions of this message have been removed]

It is a standard practice for panels with combined lamps and pushbuttons to have the lamp show the current status, or feedback from the controlled device, (Red = off, the abnormal state / Green = on, the normal state) while the pushbutton is used to command a change in state. This reflects the traffic light conditioning of many people, stop, go, brake/gas pedals.



However some companies within industries (oil & gas) reverse the meaning of the color. Green is the “safe” or the secured color while red becomes the “danger” or the active state. (This comes from the international use of the color green for safety information.) Isn’t it wonderful how the human mind can conceive of more than one way to do the same task. Thus the need for control philosophies, policies, procedures and training “Documentation.” I know this message really added nothing to the conversation but it was fun to reminisce.



Jim K (Houston)



From: jmriusers@... [mailto:jmriusers@...]
Sent: Monday, October 10, 2016 4:29 AM
To: jmriusers@...
Subject: Re: [jmriusers] Track Power






It does seem a little strange to have a Red Icon with the word Off to
turn On the track power and then a Green Icon with the work On to turn
Off the track power.

I am afraid the logic beats this old brain, then it does not take much
these days:-((

Thanks for pointing it out.

Peter

--
Peter Prewett, Tumut, NSW, Australia

Group:

We've touched on the R-G issue with the track on the model board. While R-G is the most common color vision problem some have a total color identification problem. There is a test that an eye doctor can use to determine exactly what is happening...

We talked about icons for the tack occupancy and we can for power too. Look at almost any electrical device today and there is a set of three icons. A "zero" for off an "I" for on and a "zero with an embedded I in the middle" the I is a bit raised...

With DCC being a square wave an icon can be made up for that too. A click button on screen made up of these icons to control power would work. If could me made to a reversed black block to further show on and off status.

Since track power being on is the normal state of affairs I would put off in the reverse black version to be more noticeable.

JIm Albanowski

<snip>

Any JMRI power indicator needs to be able to display four states (on, off, unknown (some systems do not report track power state), and inconsistent (reported state is not commanded state)), not two, which is why we chose to use four colors (green, red, yellow, and grey) and text in the standard power indicator in DecoderPro. Since it's a soft switch reporting states it can't be deliberately set to by the user (unknown and inconsistent), we use the IEEE 1621 power symbol to indicate a power toggle (although we use yellow for "unknown" instead of "standby" and overloaded inconsistent onto it) instead of creating new symbols that have to be learned.

Randall

On Oct 10, 2016, at 09:12, Jim Albanowski jimalbanowski@... [jmriusers] <jmriusers@...> wrote:

Group:

We've touched on the R-G issue with the track on the model board. While
R-G is the most common color vision problem some have a total color
identification problem. There is a test that an eye doctor can use to
determine exactly what is happening...

We talked about icons for the tack occupancy and we can for power too.
Look at almost any electrical device today and there is a set of three
icons. A "zero" for off an "I" for on and a "zero with an embedded I in
the middle" the I is a bit raised...

With DCC being a square wave an icon can be made up for that too. A
click button on screen made up of these icons to control power would
work. If could me made to a reversed black block to further show on and
off status.

Since track power being on is the normal state of affairs I would put
off in the reverse black version to be more noticeable.

JIm Albanowski

<snip>

[Non-text portions of this message have been removed]

However some companies within industries (oil & gas) reverse the meaning
of the color. Green is the “safe” or the secured color while red becomes the
“danger” or the active state.

I believe the Italians also use this for things like safety EPO buttons and the like. And it makes a lot of sense - after all this is the way traffic lights work: -

Red - dangerous to proceed

Green - safe to proceed.

So if you apply this to safety buttons, then you use a green button because it makes the machinery safe, why use a red one - that signals you are making it unsafe ...