Modbus is a simple networking protocol that allows for control and transfer of data between Modbus devices. There are two types of Modbus, Modbus serial and Modbus TCP. Modbus serial uses serial RS232 and RS422/485 and Modbus TCP uses Ethernet. Both protocols are the same except for the additional information to handle the physical layer.
Find more Modbus products on our other web site: www.factorycomm.com/modbus.html
| 
