adccommunitymod (AutomationDirect) asked a question.
Latch
Created Date: July 19,2011
Created By: RonR399
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how is a "Latched " switch created? example: X1 is NC and it opens. can I create a virtual contact that closes until reset and have the provision to indicate on a HMI screen a message indicating that X1 opened?
Created Date: July 19,2011
Created by: Do-more PE
| X1 C0
|--|/|-----------(SET)
|
| C1 C0
|--| |-----------(RST)
C0 - Indicates that X1 opened
C1 - The contact on your HMI that resets the X1 opened indicator C0
Created Date: July 19,2011
Created by: RonR399
| X1 C0
|--|/|-----------(SET)
|
| C1 C0
|--| |-----------(RST)
C0 - Indicates that X1 opened
C1 - The contact on your HMI that resets the X1 opened indicator C0
is c0 a virtual contact?
Created Date: July 19,2011
Created by: andremholmes
What PLC are you using?. If you are using the DL line X1 would be the real world contact(pushbutton) C1 & C0 would be an internal bits( virtual contact & coil) which is operated from a HMI as was indicated by the ADC App Asistant.
If you are using a Click PLC then C0 will become C1 and C2 replaces C1 from the previous example, the same applies as was mentioned before.
You can use C0 or C1 as N/C and X1 as N/C also depending on what PLC. C1 or C2 as the coil. In this case the pushbutton would have to be a twist or pull to release.
C0 X1 DL
---|/|----------|/|-----------(C1)
C1 X1 Click
----|/|----------|/|----------(C2)
with this, you can stop from a HMI or pushbutton.
Created Date: July 19,2011
Created by: RonR399
I am using a click plc.
thanks for the examples
.
Created Date: July 20,2011
Created by: RonR399
What PLC are you using?. If you are using the DL line X1 would be the real world contact(pushbutton) C1 & C0 would be an internal bits( virtual contact & coil) which is operated from a HMI as was indicated by the ADC App Asistant.
If you are using a Click PLC then C0 will become C1 and C2 replaces C1 from the previous example, the same applies as was mentioned before.
You can use C0 or C1 as N/C and X1 as N/C also depending on what PLC. C1 or C2 as the coil. In this case the pushbutton would have to be a twist or pull to release.
C0 X1 DL
---|/|----------|/|-----------(C1)
C1 X1 Click
----|/|----------|/|----------(C2)
with this, you can stop from a HMI or pushbutton.
could someone send me an example program that uses a Latch with the "click " plc's??
Created Date: July 20,2011
Created by: Do-more PE
What I posted above will work with Click. Another style of latch is like below.
| X1 C1 C0
|--|/|------|/|-------(OUT)
| |
| C0 |
|--| |---|
When X1 goes on C0 will turn on and will latch due to the parallel contact around X1. When C1 is pressed, it will turn off C0 breaking the latch.
This will also work with Click.
Created Date: July 20,2011
Created by: RonR399
What I posted above will work with Click. Another style of latch is like below.
| X1 C1 C0
|--|/|------|/|-------(OUT)
| |
| C0 |
|--| |---|
When X1 goes on C0 will turn on and will latch due to the parallel contact around X1. When C1 is pressed, it will turn off C0 breaking the latch.
This will also work with Click.
I should have been more specific, I would like an actual program file(zipped)
to be in a reply so I can load it into my "click " and see how it works.
Created Date: July 21,2011
Created by: milldrone
RonR399,
Try this
Created Date: July 21,2011
Created by: RonR399
RonR399,
Try this
thanks, I will try it tonight. I cannot do it at work.
Created Date: July 19,2011
Created by: RonR399
how is a "Latched " switch created?
example: X1 is NC and it opens. can I create a virtual contact
that closes until reset and have the provision to indicate
on a HMI screen a message indicating that X1 opened?