Cara Bereck Levy Posted March 2, 2015 Report Share Posted March 2, 2015 Hello, people I am curious... You've got your PLC. You've got your I/Os, barcode readers, frequency converters...a whole universe of devices. You've got to get them talking... What is your preferred protocol? Which do you find is the easiest to set up and use? Is there one that you really love ...or really hate ? Quote Link to comment Share on other sites More sharing options...
Gabriel Franco Posted March 2, 2015 Report Share Posted March 2, 2015 Cara, I prefer Modbus either over RS485 or Ethernet, also UniCAN for remote I/O. I would like having Ethernet/IP in Unitronics products Quote Link to comment Share on other sites More sharing options...
Walkerok Posted March 3, 2015 Report Share Posted March 3, 2015 I think the way to phrase this is what com protocols do I have to use regularly as compared to what would I like to use. Given my industry type (and being in Oklahoma USA) most equipment I have to interface to comes standard with Mobdus RTU 485/232 and some has Modbus TCP. From a generic standpoint we use the following (in order of frequency): RS485 modus to most VFDs and soft starts UNICAN talking between PLCs CANBus J1939 for engines and valve controllers Modbus TCP/IP to talk to Allen Bradley equipment BACnet for building BMS Lonworks for building BMS No one has asked us to use Profibus but I am sure it will happen sometime. Thanks Keith Quote Link to comment Share on other sites More sharing options...
Henny Posted March 3, 2015 Report Share Posted March 3, 2015 Hello As a note on what Keith says about Profibus. The V130,V350 and the new V430 can act as profibus slave but not as a profibus master so it,s not possible to connect I/O of other devices directly to one of these controllers using profibus. Another protocol that is more commonly used in europe besides profibus is profinet. So if Unitronics controllers will be considdered in plants in Europe to do small tasks and theirfore have to communicate with Siemens controllers esspecially the Profinet protocol should be considdered I think? Regards Henny Quote Link to comment Share on other sites More sharing options...
Cara Bereck Levy Posted March 4, 2015 Author Report Share Posted March 4, 2015 Thanks for the input so far--I hope some more people will participate.>what com protocols do I have to use regularly as compared to what would I like to use. < Keith--so, what would you like to use? :-) Quote Link to comment Share on other sites More sharing options...
Henny Posted March 4, 2015 Report Share Posted March 4, 2015 Hello Cara Why not offer an OPC client interface for the Unistream like most scada systems already have?With the Vision systems Unitronics offered an OPC server so that scada systems can communicate in that way with Unitronics PLC, s.In practice al major OPC server manufacturers have a OPC server that can communicate with all important brand plc,sIf for example Unistream could act as a OPC DA client it would be quit easy to interface it with all kind of other brand plc,s and make use of the Unistream as kind of a scada system that also has the advantage that it can run plc logic. The Unistream has the potential to be used as scada especially in combination with the intergrated web server and in this way it would not only compete with PLC manufactures but also with scada manufactures. This is just a personal Idea. Kind Regards Henny Quote Link to comment Share on other sites More sharing options...
Walkerok Posted March 4, 2015 Report Share Posted March 4, 2015 Well Cara, What I would like to use is a magical protocol that does all of the work automatically on its own just by my connecting one device to any other device, but since C3PO/R2D2 are still not a viable technology (COMON WORLD ) I will just have to continue to do it the hard way. Seriously the only com that I get asked for that an enhanced Vision does not do is Ethernet/IP. I know that Unistream will have this worked out soon (if not already), but it would still be most excellent to have it in a Vision controller as well. Keith Quote Link to comment Share on other sites More sharing options...
Kikis Posted March 5, 2015 Report Share Posted March 5, 2015 I use MODBUS RTU to communicate with third-party devices such as VFD's, power analyzers, etc.. I also use UNICAN for communication between PLC's. Btw It would be great if Unitronics supported ETHERCAT protocol for the UniStream products!!! 1 Quote Link to comment Share on other sites More sharing options...
Daniel L Posted July 6, 2016 Report Share Posted July 6, 2016 ETHERCAT is an important interface to support. Very fast and flexible. Wide base of support and growing quickly. Very strong in motor controls - multi axis stuff. Daniel 1 Quote Link to comment Share on other sites More sharing options...
kvlada Posted July 17, 2016 Report Share Posted July 17, 2016 - RS-485/232 custom protocol - for digital scales, barcode scanners, etc. - CANopen - for distributed I/O modules - MODBUS TCP/IP - connecting multiple Unitroncis PLCs together - MODBUS RTU - for various slave devices, VFDs, etc - MODBUS ASCII (very rarely) - Rinstrum weighing indicators, and other exotic devices I wish there was a 4-port or 8-port I/O module with integrated protocol FB. For example: "IO-4RS2-2RS4" with 4xRS-232 and 2xRS-485 port. Configure protocols via FBs or hardware configuration. Quote Link to comment Share on other sites More sharing options...
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