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724-746-5500 | blackbox.com
724-746-5500 | blackbox.com
Page 55
Appendix A: RS-232 Connections
Appendix A. RS-232 Connections
A.1 2- and 4-Port Serial Server DB9 Pinouts in RS-232 Mode
Figure A-1. DB9 connector.
Table A-1. DB9 connector pinout.
RS-232 Signal Name DTE RS-232 DB9 M Pin
Carrier Detect In DCD 1
Receive Data In RXD 2
Transmit Data Out TXD 3
Data Terminal Ready Out DTR 4
Signal Ground — GND 5
Data Set Ready In DSR 6
Request To Send Out RTS 7
Clear To Send In CTS 8
Ring Indicator In RI 9
A.2 1-Port Serial Server Terminal Block Pinout in RS-232 Mode
Figure A-2. Terminal block connector.
Table A-2. 1-Port Serial Server Terminal Block
Pinout in RS-232 Mode.
RS-232 Signal Name DTE RS-232 Terminal
Signal Ground — GND 1
Clear To Send In CTS 2
Transmit Data Out TXD 3
Receive Data In RXD 4
Request To Send Out RTS 5