Im in need of a DIN Rail mounted DIP Switch addressable Modbus RTU I/O Module (Analogs and Discretes) for my project. The comms will be through an RS-485 Network.

I have found the following resources after spending some time on google, can anyone recommend any other modules?

ttp://www.foks.com.tr/D1_20en.asp

http://www.acromag.com/functions.cfm?Category_ID=13&Group_ID=2

http://www.iclinks.com/Products/DistributedIO/MicroBrick.html

http://www.conlab.com.au/content10.htm

 

Take your pick.. just about all industrial I/O manufacturers support Modbus RTU; the exception being Phoenix Contact. It’s just about the easiest and most cost effective protocol to implement (not to mention it’s world-wide acceptance), I’m not sure why all I/O manufacturers don’t have Modbus comms.

Beckhoff http://www.beckhoff.com/ is very hard to beat when it comes to price and user-friendliness.

Other I/O manufacturers who support Modbus RTU:
http://www.wago.com
http://www.sixnetio.com
http://www.opto22.com
http://www.advantech.com
http://www.automationdirect.com

-CH

 

On July 13, 2004, CH wrote:
> Beckhoff http://www.beckhoff.com/

Currently checking on these guys, I'm hoping they will work out cheap with just the Modbus Coupler and the IO Modules. Thing is, will they beat the ICLinks modbus modules on price?

> Other I/O manufacturers who support Modbus RTU:
>
> http://www.wago.com

Way too expensive.

> http://www.sixnetio.com

These are the products we currently use, we are a sixnet integrator... The I/O modules require a software download which is what we are trying to get away from.

> http://www.opto22.com

Rack + Comms Module + I/O Module combo, too expensive!

> http://www.advantech.com

Needs software to program the ADAM modules, these are CHEAP but not what I need

> http://www.automationdirect.com

Rack + Comms Module + I/O Module combo, too expensive!

Any other ideas?

 

Quartech Corp - I think they have a simple I/O module that speaks AB and Modbus protocols. (You may have to specifically request Modbus, but I have been told it is available.)

 

You can try using the the ABB AC31 ICMK-M Modules. They are ready to use MODBUS RTU Slaves with an address switch. Manufacturer is ABB Entrelec France.

[email protected]

 

Please visit the following links:
http://www.lt-automation.com/
http://www.lt-automation.com/PLCs(e).htm
http://www.lt-automation.com/T100(e).htm
The above links for a PLC with 8 analog inputs, 8 Digital outputs, 8 digital inputs, two comm ports with modbus, internet/ethernet capabilities.

http://www.lt-automation.com/AnalogModules.htm
These modules can also be connected to any other software/device via Modbus

 

Just as an update guys, we have decided to use BECKHOFF! these guys proved to be the best solution for us (price and functionality). The pricing is very attractive. Im yet to use them in an application but its feneitely worth your while checking them out if you need something along these lines (DIP).

Thanks to everyone for your support!