Proface APL3000B - Node Box PC User Manual
Page 31
PS-3000B Series Hardware Manual
2-8
COM2
COM2 can be changed to either RS-232C, RS-422 or RS-485. (The factory setting is RS-232C.) To change
this setting, set Serial Mode Select Switch on the circuit board to the desired position.
SEE
Pin Arrangement
Pin No.
RS-232C
Signal Name
Direction
Meaning
1
CD
Input
Carrier Detect
2
RD(RXD)
Input
Receive Data
3
SD(TXD)
Output
Send Data
4
ER(DTR)
Output
Data Terminal Ready
5
GND
-
Signal Ground
6
DR(DSR)
Input
Data Set Ready
7
RS(RTS)
Output
Request to Send
8
CS(CTS)
Input
Clear to Send
9
CI(RI)/+5V
*1
*1
To change the RI/+5V setting of #9 pin set System Set switch to the desired po-
sition.
Input / Output
Called status display / +5V
Output (Switching available)
FG
FG
-
Frame Ground
(Common with SG)
Pin No.
RS-422
Signal Name
Direction
Meaning
1
RDA
Input
Receive Data A (+)
2
RDB
Input
Receive Data B (-)
3
SDA
Output
Send Data A (+)
4
NC
-
No Connection
5
GND
-
Signal Ground
6
NC
-
No Connection
7
SDB
Output
Send Data B (-)
8
NC
-
No Connection
9
NC
-
No Connection
FG
FG
-
Frame Ground (Common with SG)
9
6
5
1
(PS-B side)