Proface APL3000B - Node Box PC User Manual
Page 53
PL3000 Series Hardware Manual
3-12
Serial Interfaces (COM2/COM3/COM4)
This interface is used to connect an RS-232C serial cable. A D-sub 9-pin plug connector is used.
Interfit Bracket
#4-40 (UNC)
Pin Arrangement
Pin No.
RS-232C
Signal Name
Direction
Description
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
SG
-
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
Input/-
Called status display
+5V Output 0.5A
*1
*2
*1
Only COM2 can be changed to +5V output. COM3 and COM4 are fixed at CI (RI).
*2
To change the CI (RI)/+5V setting of pin #9, set the slide switch located on the
circuit board in the PL unit to the desired position. See “3.4 Internal Switches
Shell
FG
-
Frame Ground
(Common with SG)
(PL unit side)
9
6
5
1