Sys_fan2: system fan2 power connector, Cn1: serial ports(com1), Pin # signal name – IBASE MI941 User Manual
Page 18
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INSTALLATIONS
SYS_FAN2: System Fan2 Power Connector
14
MI941 User’s Manual
Pin #
Signal Name
1 Ground
2 +12V
3 Rotation
detection
CN1: Serial Ports(COM1)
CN1 (COM1) is a DB-9 connector,
Signal Name
Pin #
Pin #
Signal Name
DCD, Data carrier detect
1
6
DSR, Data set ready
RXD, Receive data
2
7
RTS, Request to send
TXD, Transmit data
3
8
CTS, Clear to send
DTR, Data terminal ready
4
9
RI, Ring indicator
GND, ground
5
10
Not Used
J2: COM2 is jumper selectable for RS-232, RS-422 and RS-485.
Pin #
Signal Name
RS-232
R2-422 RS-485
1 DCD TX- DATA-
2 RX TX+ DATA+
3 TX RX+ NC
4 DTR RX-
NC
5 Ground Ground Ground
6 DSR NC
NC
7 RTS NC
NC
8 CTS NC
NC
9 RI NC
NC
10 NC
NC
NC
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