Adrian Posted August 8, 2011 Report Share Posted August 8, 2011 Hi, I have a problem with commnunication, I try to connect a Nport5150 to Jazz PLC R31 wich has a MJ20-RS; but I have a problem with the connections, because the Nport has 3 pins ( Data A, Data B and "GND") and the MJ20-RS only has 2 (Data A, Data B , my question is, where can I connect the GND terminal? And finally, i need help to acces the database of the Jazz PLC with MODBUS, i mean to the headers of MODBUS (eg. 0X:0, DW:10) I'm interesting only in the Jazz PLC R31. PD. I have problems with my english, I'm starting to study, that's why I write as short as possible. Thanks, Regards. Adrian G. Quote Link to comment Share on other sites More sharing options...
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