wuchi Posted July 19, 2007 Share Posted July 19, 2007 Hi! I have a problem with modbus RTU communication in DaqFactory. The problem is that i sometimes have failure on connection because i have 100 tags on modbus RTU. Do i have to limit the speed of communication or something like that ? Thx Wuchi Link to comment Share on other sites More sharing options...
AzeoTech Posted July 19, 2007 Share Posted July 19, 2007 No there is no limit, though under versions 5.40 and earlier there was some code that could slow it down. So, first, upgrade to the latest version by downloading from our website. Then, look at the monitor and see how long it takes to send and receive a response. Next, you should try and put your tags in consecutive order so DAQFactory can retrieve the values with the minimum number of calls. If, for example, you want to read tags 1,2 and 3, DAQFactory can make a single call. If you want tags 1, 5 and 8, DAQFactory has to make three separate calls. Link to comment Share on other sites More sharing options...
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