ABB ARR600 User Manual page 23

1MRS758458 F
ARR600
User Manual
Table 6: 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 7: DIP switches
DIP switch Mode
1 RS-232 or differential
2 DUPLEX
3 BIASING
4 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.
Table 8: Application serial port pinouts in RS-422/485 modes
PIN
1
2
3
4
5
Table continues on next page
Value
300...460800 bps
8
No parity
1
CTS/RTS
State
0 = RS-232, 1 =
RS-485 and RS-422
0 = FULL, 1 = HALF
0 = OFF, 1 = ON
0 = OFF, 1 = ON
RS-422 full-duplex (4-wire)
-
RXD positive (in)
TXD negative (out)
-
GND
Section 3
Physical connections
Description
Selects the serial port
operation mode
Selects between
RS-422 full-duplex (4-
wire) and RS-485 half-
duplex (2-wire)
differential modes
Enables RS-422
biasing on pins 2 and
8
Enables RS-422
termination on pins 2
and 8
RS-485 half-duplex (2-wire)
-
-
TXD/RXD negative (out/in)
-
GND
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