ASTDan Posted June 21, 2008 Report Posted June 21, 2008 Hello, I am using NI's Modbus Library and am having a problem. I am trying to read data at Modbus address 404198. However the address input is 16 bit and can only accept a maximum number of 65535. Any sugestion? Quote
David Wisti Posted June 21, 2008 Report Posted June 21, 2008 404198 is really address 4198 of the holding registers. 4 = holding registers. Most Modbus servers are one based so 400001 is this first holding register (offset 0). In your picture you going to read 365535 because your trying to read input registers, 3 = input registers. Quote
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