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Page 12
RS-485/422 - two 2-pin terminal blocks for RS-485/422 serial interface used to control auxiliary
equipment.
The RS-485/422 serial port can be configured in the following port modes:
•
Bidirectional RS-485 half-duplex port for data transmission using two wires, one
combined RX/TX pair.
•
Bidirectional RS-485 full-duplex port for data transmission using four wires, one RX
pair and one TX pair.
•
Unidirectional RS-422 port for transmitting or receiving data using two wires,
RX- or TX pair.
•
Bidirectional RS-422 full-duplex port for data transmission (point-to-point) using four
wires, one RX pair and one TX pair.
Function
RS-485/422TX(A)
RS-485/422TX(B)
RS-485A alt RS-485/422RX(A)
RS-485B alt RS-485/422RX(B)
Pin
Notes
1
TX pair for RS-422 and 4-wire RS-485
2
3
RX pair for all modes (combined RX/TX for 2-wire RS-485)
4
Rx/Tx
Tx
4
3
AXIS P1355/P1357 Installation Guide
2
1
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