rodbloemer Posted November 22, 2016 Report Share Posted November 22, 2016 Hello, I need write reference speed on VFD Rockwell Powerflex 4M with Jazz R16 via ModBus RS485, any exemplo for me? I never work with modbus. VFD info: COmm data rate: 19200 Comm node addr: 100 Comm Format: RTU 8-N-1 Tks. Link to comment Share on other sites More sharing options...
DanT Posted November 23, 2016 Report Share Posted November 23, 2016 Hi Assuming you have the JZ20-R16, you will need install the JZ-RS4 Module to the JAZZ to be able to work with MODBUS. ( You will be programming the JZ20 via the USB Port, and can go online with the JAZZ to troubleshoot your program) There is an Example program in HELP-Examples-MODBUS that will show the steps to setup MODBUS in the JAZZ-M90 Controllers ( You have to use the Special Functions Methods - See Help - MODBUS for further details) From the Description provides, the JAZZ will be the MODBUS Master . Look up the JZ-RS4 Installation manual to review it's settings and wiring. DanT Link to comment Share on other sites More sharing options...
rodbloemer Posted November 23, 2016 Author Report Share Posted November 23, 2016 Hi DanT I'm using the adapter JZ-RS4, the wiring is ok. I'm initially reading the status data VDF but nothing is received. Below Code. MODBUS JAZZ_4M.U90 Link to comment Share on other sites More sharing options...
rodbloemer Posted December 3, 2016 Author Report Share Posted December 3, 2016 Any example VDF A-B With Jazz modbus? Link to comment Share on other sites More sharing options...
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