DanT Posted December 8, 2015 Report Share Posted December 8, 2015 Hi; Customer has a Siemens 353 Controller and needs to communicate to it via Modbus ( we are using Serial RTU) Unistream is the Master, 353 is the slave. Communications is working properly We can read bits from the 353 like the push buttons, after adjusting the addressing by 1 ( Siemens 342 = Unitronics 341) We are having trouble with the Integer registers, they are coming back blank. Siemens 40061 - 40066 are basic clock data and we cannot read that, let alone the data that we need. Anyone with experience with this controller? a few more clues? Dant Quote Link to comment Share on other sites More sharing options...
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