1-13 (E)
BKSI-2440
1-6-3. Signal Inputs/Outputs
Input and output signals of the connectors on the connector
panel are shown below.
RS232C/422A 1, 2, 3, 4, 5, 6
: D-sub 9-pin (Female)
1-6-4. Switch Setting
IO-111 board
<External View>
Pin No.
Signal
RS-232C
RS-422A (M)
RS-422A (S)
1
NC
FRAME GND
FRAME GND
2
RXD I
RX–
TX–
3
TXD O
TX+
RX+
4
DTR O
GND
GND
5
GND
NC
NC
6
DSR I
GND
GND
7
RTS O
RX+
TX+
8
CTS I
TX–
RX–
9
NC
NC
NC
COR5 COR6
COR3 COR4
COR1 COR2
• COR (Slide switch)
COR1, COR2, COR3, COR4, COR5, COR6
:RS-422A signal termination switches
The COR1 to COR6 correspond to the RS-232C/422A
connectors (D-sub 9-pin) 1 to 6 respectively.
Switch setting to each connector individually is possible.
ON : 100
Ω
termination (Factory setting)
OFF : 10 k
Ω
termination
ON
OFF
ON
OFF
5
9
6
1
