Proface APL3000B - Node Box PC - Manual (Page 30)

Chapter 2 Specifications
2-7
2.1.3 Interface Specifications
This section describes the specifications of each interface of the PS3000-BA unit.
„ Serial Interface (COM1,COM2)
‹ COM1
• This PS-B unit’s serial port is not isolated. When the host (PLC) unit is also not
isolated, and to reduce the risk of damaging the RS-232C/RS-422/RS-485 circuit,
be sure to connect the #5 SG (Signal Ground) terminal.
Interfit Bracket #4-40 (UNC)
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) Input Called status display
FG FG -
Frame Ground
(Common with SG)
9
6
5
1
(PS-B side)