Frequently Asked Questions What is Modbus? What is it used for? How does it work? What is hexadecimal? How is data stored in Standard Modbus? What is a function code? What is a CRC? What are the formats of Modbus commands and responses? What are data types? What is byte and word ordering? What is a Modbus Map? What is the difference between Modbus ASCII and Modbus RTU? What are extended register a