nikita1 Posted September 1, 2012 Report Share Posted September 1, 2012 Hi, Can i MJ10-22-CS25 cable (programming cable) for modbus communication between my PC to M91-2-T38? thanks, Nikita1 Quote Link to comment Share on other sites More sharing options...
MVP 2022 Joe Tauser Posted September 2, 2012 MVP 2022 Report Share Posted September 2, 2012 Yes. If you haven't already, look at Help->Sample U90 Projects->Examples->MODBUS for example programs to configure the COM port as a master or slave. Joe T. Quote Link to comment Share on other sites More sharing options...
nikita1 Posted September 2, 2012 Author Report Share Posted September 2, 2012 thanks Joe, i'm new on PLC's and i want to communicate with PC (the PC will be the master) what kind of Modbus (ASCII/RTU) does M91-2-T38 use? Quote Link to comment Share on other sites More sharing options...
Emil Posted September 2, 2012 Report Share Posted September 2, 2012 All our controllers use Modbus RTU on their serial ports. In addition, almost all Vision models (except V120) support Modbus IP, if optional Ethernet card was installed. Quote Link to comment Share on other sites More sharing options...
nikita1 Posted September 2, 2012 Author Report Share Posted September 2, 2012 Thanks Emil, i'v loaded the Modbus slave demo program from the U90 ladder examples. and try to read data with Modbus Poll application, now i'm getting a time out message, does somone have any idea whats wrong , attach is a screenshot from Modbus poll . Quote Link to comment Share on other sites More sharing options...
Emil Posted September 2, 2012 Report Share Posted September 2, 2012 First of all - disable Flow control. Check if the controller is set to ID1. The standard example is set ot ID2. Please check again the communication cable. I hope these tips will help. Quote Link to comment Share on other sites More sharing options...
nikita1 Posted September 2, 2012 Author Report Share Posted September 2, 2012 thanks alot! it works!!!! Quote Link to comment Share on other sites More sharing options...
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