 |
plc.myforum.ro
PLCs users www.plc.myforum.ro!
|
| View previous topic :: View next topic |
| Author |
Message |
chuahyc
Junior
Joined: 05 Dec 2012
Posts: 6
|
 Posted: 16/12/2012 07:13 Post subject: PNP Sourcing Input with PNP type instrument |
 |
|
As i know PNP Souching input need to connect with NPN dispozitiv to make use of it...
Currently the supplier provided PNP type instrument with my PNP sourching Input module.
How do i make use of it? It's the only way to change the Instrument to NPN type? |
|
| Back to top |
|
 |
messer
Senior
Joined: 08 Mar 2012
Posts: 2059
Location: Europe
|
| Posted: 17/12/2012 21:16 Post subject: Re: PNP Sourcing Input with PNP type instrument |
|
|
| chuahyc wrote: | As i know PNP Souching input need to connect with NPN instrument to make use of it...
Currently the supplier provided PNP type instrument with my PNP sourching Input module.
How do i make use of it? It's the only way to change the Dispozitiv to NPN type? |
Your question is a little confused just for me....
Regarding Defining Sinking & Sourcing I/O you can find some information here...
http://www.vr.ncue.edu.tw/esa/C_8051/Defining%20Sinking%20%20Sourcing%20IO.pdf
http://www.engr.siu.edu/staff/spezia/Web438B/Lecture%20Notes/ET438B-9.pdf
In general, a sinking input is one that needs to be pulled up towards the positive supply to be true.
And a sourcing input is one that needs to be pulled toward ground to be true.
So a Sourcing output would normally be used with a sinking input and vice versa.
A sourcing circuit would be drawn as voltage->switch->load->ground.
A sinking circuit would be drawn as Voltage->load->switch->ground.
This all assumes positive logic.
A Sensor Wiring with Sinking/Sourcing can be seen here:
http://engineeronadisk.com/V2/book_implementation/engineeronadisk-92.html |
|
| Back to top |
|
|
|
|
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
|
Powered by phpBB © 2001, 2005 phpBB Group
Fa-ti si tu propriul forum GRATUIT, pe www.myforum.ro |
FAQ
Search
Memberlist
Usergroups
Register
Profile
Log in to check your private messages
Log in
