External Moderators tmoulder Posted October 8, 2013 External Moderators Report Share Posted October 8, 2013 I love that I can now connect to more than 4 simultaneous devices on modbus TCP! But I also have a project coming up where I would need to hook into, say, 14 of them. As such, what is the firm-and-fast, not-to-exceed number of modbus devices I can connect to simultaneously on TCP? Thanks! TM Quote Link to comment Share on other sites More sharing options...
Cara Bereck Levy Posted October 9, 2013 Report Share Posted October 9, 2013 We have run field-testing hooked up to 32 devices, and everything worked just fine. It is, as of right now, not officially limited to 32, but I would not recommend more that at this time, so if you need more, let me know. So, that's twice 14 plus 4 Quote Link to comment Share on other sites More sharing options...
MVP 2022 Flex727 Posted October 9, 2013 MVP 2022 Report Share Posted October 9, 2013 I've never gotten an answer to the question as to why the Vision PLCs were limited to 4 simultaneous connection (4 available sockets). Is it hardware or software? And since it was so definitive with the Vision PLCs, why don't you have a definitive answer with the UniLogic PLCs? Quote Link to comment Share on other sites More sharing options...
Cara Bereck Levy Posted October 10, 2013 Report Share Posted October 10, 2013 Yes--it's a hardware limitation. The whole UniLogic architecture is different. Sockets are virtual--a whole different ball game...league, really 1 Quote Link to comment Share on other sites More sharing options...
Gravshin Andrey Posted October 14, 2013 Report Share Posted October 14, 2013 In Visilogic I could dynamically add new slaves, changing the variable address of the device. In Unilogic address is constant. In addition there is no possibility to copy slaves. If I add slaves with a stock, how to enable/disable poll devices? Quote Link to comment Share on other sites More sharing options...
Ofir Posted October 17, 2013 Report Share Posted October 17, 2013 Hi, In the future we will add the option to copy slave and have HMI variable that the user will be able to enter the slave ID/IP. Currently for each slave you configure in UniLogic, in its properties you can find a parameter "Active" - you can link a bit to this parameter and then you can disable/enable a specific slave. You can also set "Active" bit for each one of the MODBUS commands. Quote Link to comment Share on other sites More sharing options...
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