C-4
Series 90-30 PLC Installation and Hardware Manual
–
August 2002
GFK-0356Q
C
Pin Assignments for the Isolated Repeater/Converter
Table C-1. Isolated Repeater/Converter Pin Assignments
J1 RS-422 Port (25-pin female connector)
J2 RS-422/RS-232 Port (25-pin female connector)
Pin
Signal
Description
Pin
Signal
Description
NC
NC
2
NC
2
SD
Send Data (RS-232)
3
NC
3
RD
Receive Data (RS-232)
4
NC
4
RTS
Request to Send (RS-232)
5
NC
5
CTS
Clear to Send (RS-232)
6
NC
6
NC
7
0V
Ground Connection
7
0V
Ground Connection
8
CTS(B’)
Clear to Send (Optional Termination)
8
CTS(B’)
Clear to Send Optional Termination)
9
CTS(A’)
Clear to Send (Optional Termination)
9
CTS(A’)
Clear to Send (Optional Termination)
0
CTS(B’)
Clear to Send
0
RTS(B)
Request to Send
CTS(A’)
Clear to Send
RTS(A)
Request to Send
2
RTS(B)
Request to Send
2
CTS(B’)
Clear to Send
3
RTS(A)
Request to Send
3
CTS(A’)
Clear to Send
4
RD(B’)
Receive Data
4
SD(B)
Send Data
5
RD(A’)
Receive Data
5
SD(A)
Send Data
6
SD(A)
Send Data
6
RD(A’)
Receive Data
7
SD(B)
Send Data
7
RD(B’)
Receive Data
8
NC
8
RD(A’)
Receive Data (Optional Termination)
9
NC
9
RD(B’)
Receive Data (Optional Termination)
20
NC
20
NC
2
NC
2
NC
22
RD(B’)
Receive Data
22
SD(B)
Send Data (Optional Termination)
23
RD(A’)
Receive Data
23
SD(A)
Send Data (Optional Termination)
24
SD(A)
Send Data
24
NC
NC=No Connection
SD (Send Data) and RD (Receive Data) are the same as TXD and RXD (used in the Series Six PLC).
(A) and (B) are the same as – and + A and B denote outputs, and A’ and B’ denote inputs.
Caution
The signal ground connections (pin 7 on each connector) must be made
between the Isolated Repeater/Converter and the PLC for J1, and the
Isolated Repeater/Converter and the host computer for J2.
Pin 7 of the J1 port is connected to the metal shell of the J1 connector. Pin 7
of the J2 port is connected to the metal shell of the J2 connector. These two
signal ground connections are isolated from each other and from the power
system ground (green wire on the terminal block). To maintain proper
isolation, these signal grounds cannot be tied together.