Does rs485 require a ground?

Related questions

1. What is rs232 to rs485?
2. Is rs485 serial or parallel?
3. What is rs485 cable?
4. Is rs485 a BACnet?
5. What is multidrop network topology?
6. How many devices can be connected on rs485?
7. What is difference between Rs 232 and rs485?
8. Is rs485 a Modbus?
9. Is rs485 the same as Ethernet?
10. What is a daisy chain connection?

Tags

1. #conductors
2. #differential
3. #practice
4. #potential
5. #driver
6. #laptop
7. #ground
8. #reference
9. #there
10. #conductor
11. #problem
12. #rs485
13. #before
14. #connect