Proface APL3000B - Node Box PC - 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
Specifications (page 3-16)”.
Shell FG -
Frame Ground
(Common with SG)
(PL unit side)
9
6
5
1