Rockwell Automation AADvance Controller Demo Unit - Manual (Page 39)

Document: 553850 Issue 1.2: March 2011 4-5
Serial Port Protocols
The serial ports support the protocols listed in the table.
Table 5: Serial Port Protocols
Type Description
RS485fd Full-duplex, 4-wire connection with separate buses for
transmit and receive
RS485fdmux Full-duplex, 4-wire connection with separate buses for
transmit and receive and tri-state outputs on the
transmit connections
RS485hdmux Half duplex, 2-wire connection
Serial Port Parameters
Each serial port on the AADvance controller supports the set of control parameters as
detailed in the table.
Table 6: Controller Serial Port Parameters
Description Value(s) Default Remarks
Baud 2,400, 4,800, 9,600,
19,200, 38,400,
57,600, 76,800 or
115,200
19,200
Data Bits 5 to 8 8
Parity None, Odd or Even None
Stop Bits 1 or 2 1
Type RS485fd
RS485fdmux
RS485hdmux
RS485hdmux 'fd' means 'full duplex'
'hd' means 'half duplex'
Note: Most systems use two bits after each data byte. The two bits are either a parity
bit (odd or even) and one stop bit, or no parity and two stop bits.