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PS-3000B Series Hardware Manual
2-22
2.2.3
Interface Specifications
This section describes the specifications of each interface of the PS3001-BD 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)
Содержание PS-3000B Series
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