ABB ARC600 User Manual page 23

1MRS758459 J
PIN
8
9
Table 5: Application serial port configuration
Parameter
Baud rate
Data bits
Parity
Stop bits
Flow control
By default, all DIP switches are set to the 0 position (RS-232 mode). DIP switches
2...4 apply only when DIP switch 1 is set to differential mode (RS-485/RS-422).
Table 6: DIP switches
DIP switch
1
2
3
4
Table 7: Application serial port pinouts in RS-422/485 modes
PIN
1
2
Table continues on the next page
ARC600
User Manual
Mode
RS-232 or differen-
tial
DUPLEX
BIASING
TERMINATION
If biasing and/or termination is required for the RS-485 half-duplex (2-
wire) mode, enable RS-422 biasing/termination with DIP switches and
manually connect pins 2-7 and 3-8 together at the application port (RS-2).
Do not connect RS-422 or RS-485 cables to a serial port configured to the
RS-232 mode. This could damage the port and the connected equipment.
RS-422 full-duplex (4-wire)
-
RXD positive (in)
Function
CTS
RI
Value
300...460800 bps
8
No parity
1
CTS/RTS
State Description
0 = RS-232, 1 = Selects the serial port operation
mode
RS-485 and RS-422
0 = FULL, 1 = HALF Selects between RS-422 full-du-
plex (4- wire) and RS-485 half- du-
plex (2-wire) differential modes
0 = OFF, 1 = ON Enables RS-422 biasing on pins 2
and 8
0 = OFF, 1 = ON Enables RS-422 termination on
pins 2 and 8
RS-485 half-duplex (2-wire)
-
-
Physical connections
23