KBox A-103 – User Guide, Rev. 3.0
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11.1.10.
(X204) Serial Port COM 2 (RS422/RS485) configured as RS422 (4-Channel
Mode)
Refer to the subsections 4.4.8 “X204 - Serial Port COM 2” and to 5.1.2 “Serial Port COM2 (X204) Configuration for
RS422 or RS485 via DIP Switches”, Table 1, Table 2 and Table 3.
Table 21: (X204) Serial Port COM 2 (RS422/RS485) configured as RS422 (4-Channel Mode)
Pin
Signal Name
9-pin D-SUB Connector (female)
1
TxD-
(Transmit Data-)
2
RxD+
(Receive Data+)
3
TxD+
(Transmit Data+)
4
RxD-
(Receive Data-)
5
GND
(Signal Ground)
6
RTS-
(Request to Send-)
7
RTS+
(Request to Send+)
8
CTS+
(Clear to Send+)
9
CTS-
(Clear to Send-)
