First post, so here goes.
Apologies if this is not in the right category.
I've been asked to design a RS485, multidrop network to interface with data terminals (DCE) that spit their information out in RS232. The problem is I haven't touched anything to do with RS485 since uni - 5 years ago!
The reason behind using RS485 is that we may need to connect more DCE's at a later date.
I've read up a little about it here:http://www.lammertbies.nl/comm/info/RS-485.html, but am still a little fuzzy on the subject and wikipedia hasn't helped at all (goes mostly into the history if anything!)
I've been looking at RS232 - RS485 conversion by searching the web and have found very little.
My question is:
Am I right in thinking that you can't just plug in an RS232 DCE on a RS485 network? (from what I understand slew rate would be a problem of one)
And is there a simple solution - IC, circuit with as few components as possible to convert RS232 to RS485?
I did find this circuit: http://www.rmv.com/232-485.pdf - would this be a valid solution?
Has anyone done something like this, and if so, what pearls of wisdom can you offer?
Many thanks!
Apologies if this is not in the right category.
I've been asked to design a RS485, multidrop network to interface with data terminals (DCE) that spit their information out in RS232. The problem is I haven't touched anything to do with RS485 since uni - 5 years ago!
The reason behind using RS485 is that we may need to connect more DCE's at a later date.
I've read up a little about it here:http://www.lammertbies.nl/comm/info/RS-485.html, but am still a little fuzzy on the subject and wikipedia hasn't helped at all (goes mostly into the history if anything!)
I've been looking at RS232 - RS485 conversion by searching the web and have found very little.
My question is:
Am I right in thinking that you can't just plug in an RS232 DCE on a RS485 network? (from what I understand slew rate would be a problem of one)
And is there a simple solution - IC, circuit with as few components as possible to convert RS232 to RS485?
I did find this circuit: http://www.rmv.com/232-485.pdf - would this be a valid solution?
Has anyone done something like this, and if so, what pearls of wisdom can you offer?
Many thanks!