Interface Specifications - Pro-face PS-3710A Series Hardware Manual

PS-3710A/PS-3711A Series Hardware Manual
2.1.3

Interface Specifications

This section describes the specifications of each interface of the PS-3710A Series unit.
Serial Interface (COM1,COM2,COM3,COM4)
The PS-A unit side connector is a D-Sub 9 pin plug type.
COM1,COM2,COM4
Pin Arrangement
5
1
(PS-A side)
2-8
Interfit Bracket
• Do not connect any pins to COM3 [NC].
• Connect the FG terminal line to the shell.
• Always connect the #5 SG (Signal Ground) of the PS-A unit to the connected
device, especially if the connected device is also not isolated. Failure to do so
may damage the RS232C/RS422/RS485 circuit.
• FG and SG terminals are internally connected in the PS-A. When connecting to
another device, be sure not to create an SG shorting loop in your system.
Pin No.
Signal Name
1 CD
2 RD(RXD)
3 SD(TXD)
4 ER(DTR)
5 GND(SG)
9
6 DR(DSR)
6
7 RS(RTS)
8 CS(CTS)
9 CI(RI)/+5V
FG FG
*1 To change the RI/+5V setting of #9 pin, open the PS-A unit's rear cover and set
slide switch to the desired position.
Please refer to
#4-40 (UNC)
RS-232C
Direction
Input
Input
Output
Output
-
Input
Output
Input
*1
Input / Output
-
Switches (page 2-11) for details.
Meaning
Carrier Detect
Receive Data
Send Data
Data Terminal Ready
Signal Ground (SG)
Data Set Ready
Request to Send
Clear to Send
Called status display / +5V
Output (Switching available)
(Fixed "RI" for COM4)
Frame Ground
(Common with SG)