Serial port protocols, Serial port parameters – Rockwell Automation AADvance Controller Configuration Guide User Manual
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Document: 553633
ICSTT-RM405f-EN-P
Issue 07
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Serial Port Protocols
The serial ports support the protocols listed in the table.
Table 1:
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 2:
Controller Serial Port Parameters
Description
Value(s)
Default
Remarks
Baud
1,200; 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.