Serial port protocols, Serial port parameters – Rockwell Automation AADvance Controller Configuration Guide User Manual

Page 63

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Document: 553633
ICSTT-RM405f-EN-P
Issue 07

4-23

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.

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