CHARISTEAS Posted February 6, 2021 Report Share Posted February 6, 2021 hola buen dia, les comento hice un programa para leer y escribir valores entres PLC unitronics v350 y variador delta serieE, la cuestion es que yo puedo escribir valores tales como arrancar parar cambiar de giro y velocidades desde mi maestro (plc) pero lo que no puedo es leer la corriente ni la frecuencia, tambien quiero añadir los tiempos de aceleracion, todo mediante comunicacion modbus RTU, .rtu.vlp rtu.vlp Quote Link to comment Share on other sites More sharing options...
MVP 2021 Joe Tauser Posted February 10, 2021 MVP 2021 Report Share Posted February 10, 2021 I took a look at your program and you're going too fast. Don't hang Modbus blocks on the rail and don't call two at once- I've found you have to allow a few scans to pass after the serial port has been called. Also, your read vector length was 0. The attached program is in Visilogic 9.8.65. Joe T. rtu JT.vlp Quote Link to comment Share on other sites More sharing options...
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