I/O EXPANSION

[Mikel]

Hi everyone,

Am new here and new to unitronics also.

I currently purchased the  vision 1210 which I wanted to use for simulation.

Am using the EX-A2X I/O Expansion module adapter snap mounted on a Din rail.

Read a single adapter can connect up to 8 I/o modules only. 

is it possible to connect more than one Expansion adapters to oplc to enable me to use more I/o modules?

if yes how?

Thanks guys.

 

[Ausman]

Yes there is, but not in a direct connection way.  You need to look at the EX-RC1 adapter.  Links:

https://myzone-kza3sadj.netdna-ssl.com/wp-content/uploads/2015/12/EX-RC1_SPEC_05-08.pdf

cheers, Aus

 

[sasdiscos]

Could you not use a snap in i/o as well

 

Steve

[Flex727]

How much I/O do you need? Careful selection of modules and use of the Snap-In module (as suggested by sasdiscos) can often help when you're on the edge of needing more.

[Mikel]

Thanks Ausman, am having a look at the EX-RC1.

 

Thanks Sasdiscos, I actually thought of the snap-in I/o but I do not have one currently.

I have to order it from my agent and its gonna take a while before it reaches me. but thanks for your suggestion.

 

Hi Flex, am working with 30x digital inpts, 20x digital outpts, 20x 4-20ma analog inpts, 3 RTD's and 10x analog outpts.

am using 2x IO-DI16

                    2x IO-TO16

                    3x IO-AI8

                    1x IO-PT400 and

                     2x IO-AO6X

which takes my I/o modules to a total of 10.

                       

 

                      

                   

 

[Ausman]

6 hours ago, sasdiscos said:

Could you not use a snap in i/o as well

Correct!  Me being dumb and thinking he had it already.  Head smack!

cheers, Aus

[Flex727]

6 hours ago, Mikel said:

Hi Flex, am working with 30x digital inpts, 20x digital outpts, 20x 4-20ma analog inpts, 3 RTD's and 10x analog outpts.

am using 2x IO-DI16

                    2x IO-TO16

                    3x IO-AI8

                    1x IO-PT400 and

                     2x IO-AO6X

which takes my I/o modules to a total of 10.

Looks like poor module selection. Unless I'm missing something, if you used the following, you would need only 7:

EX-D16A3-TO16

IO-D16A3-TO16

IO-PT400

IO-AO6X

IO-AO6X

IO-AI8

IO-AI8

[Ausman]

Flex, you mention the larger I/Os.  My personal view on this is that Unitronics don't "promote" the larger capacity I/Os enough, and not many people know about them.  For instance, when you look at the I/O listings, you see "Digital" and it is very easy to assume that that's it.  You are only presented with the smaller I/Os.  You actually have to go down past Analogue/Temp etc to reach the higher capacity modules.  This is a big failing in my view, and the page needs adjustment to bring it all together.

And whilst on I/Os, and relating to my error above about the snap-in, I try to not use snap-ins, rather discrete I/Os for both ease of replacing and likely smaller cost in the unlikely event of it needing replacement in the future.

cheers,

Aus

[Ausman]

And whilst I'm whingeing, I wish all the I/Os would use plug-in connectors to enable easier changing.  And sometimes easier assembly.

cheers, Aus

[Mikel]

Sorry I've been away for a while.

you are right Flex,  module selection was poor. 

I also agree with AUSMAN.  The larger I/o modules need to be promoted more.

Thanks to you all.