1. Explain how a HART device works 2. What are the two transmission modes for Modbus? 3. If there is fault to a slave, can it report to the master immediately? 4. Do slaves reply to a broadcast request from master? Why? 5. How many masters can a Mobus have? How many slaves can it have? (Look in the Modbus specification!) 6. What are in a Modbus frame? 7. Why does the master have to wait after it sends out a broadcast request? 8. How many bits in each byte in RTU mode and ASCII mode? What are these bits? 9. What are t3.5 and t1.5? How do you calculate them? 10. Decode the following RTU Modbus messages. Are they from the master or the slave? I l. Create a Modbus message in RTU mode for the Master to request the following information from slave 2: Read coils 10-23. Suppose coils with even labels are all 1 and the ones with odd numbers are all 0. What is the message in RTU mode that the slave should send? 12. Create a Modbus message in RTU mode for the Master to request the following information from Slave 3: Read holding registers #2-5. Suppose the holding registers have the following values: 125. 250, 10, and 50 respectively. What is the message in RTU mode that the slave should send