# Settings

Navigation: Valve Firmware > Interface > RS232/485 > # Settings |

The Valve COM port settings must be identical with the settings from the Host control system.

| Parameter | Description
Settings | Baud Rate | Number of bit transfers per second Factory setting: 115200 After a Baud Rate change is a Valve reset necessary.
Data Bit Length | Data bits in a transmission Factory setting: 8
Stop Bit | End of communication for a single packet Factory setting: 1
Command Set | Communication protocol Factory setting: IC
Operation Mode RS485 | Topology | Half or Full duplex topology
Network | Multiple Device or Point to Point network
Address | Network address at multiple device communication