RMV Posted August 18, 2010 Share Posted August 18, 2010 Hi, I am trying to setup a Modbus TCP Slave on a Ethernet Server port, but I don Link to comment Share on other sites More sharing options...
AzeoTech Posted August 18, 2010 Share Posted August 18, 2010 Most likely you have Windows Firewall running, which is blocking the port. Link to comment Share on other sites More sharing options...
RMV Posted August 19, 2010 Author Share Posted August 19, 2010 HI, You are right. I have stopped the firewall but I haven DAQ_MODBUSTCP_SLAVE_AND_MASTER.pdf Link to comment Share on other sites More sharing options...
AzeoTech Posted August 19, 2010 Share Posted August 19, 2010 If what you attached is the Rx from the iFIx, then the issue is that it is requesting from Modbus ID 0. ID 0 is reserved (by the Modbus Protocol) for broadcast messages. You should use Modbus ID 1. Also, note that you are using command 1, and really should be using command 3 or 4. Link to comment Share on other sites More sharing options...
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