User manual

APC-3X98(A) User Manual
15
RS422
3-5 ( Close)
4-6 ( Close)
9-11 ( Close)
10-12 ( Close)
17-18 (Close)
RS485
3-5 ( Close)
4-6 ( Close)
15-16 (Close)
7. COM1: (Type DB9), Rear serial port, standard DB9 serial port is provided to make a direct
connection to serial devices. COM1 port is controlled by pins No.1~18 of JP485, select output
Signal RS232 or RS422 or RS485, for details, please refer to description of JP485.
Pin#
Signal Name
RS232
RS422
RS485
1
DCD# (Data Carrier Detect)
422_TX-
485_D-
2
RXD (Received Data)
422_RX-
NC
3
TXD (Transmit Data)
422_RX+
NC
4
DTR (Data Terminal Ready)
422_TX+
485_D+
5
Ground
Ground
Ground
6
DSR (Data Set Ready)
NC
NC
7
RTS (Request To Send)
NC
NC
8
CTS (Clear To Send)
NC
NC
9
RI (Ring Indicator)
NC
NC
please refer to description of JP485
8. COM3: (Type DB9), Rear serial port, standard DB9 serial port is provided to make a direct
connection to serial devices. COM1 port is controlled by pins No.1~6 of JP3 select output Signal RI
or 5V or 12v, for details, please refer to description of JP3.
Pin#
Signal Name
1
DCD# (Data Carrier Detect)