10 Instrument setup
Roche Diagnostics
COBAS INTEGRA 400 plus analyzer/Cedex Bio HT Analyzer · Software version 3.6/5.1 · Host Interface Manual · Version 1.24
196 About the RS-232 serial interface
Signal description
The following table shows the most commonly used
signals.
There are about 25 different signals defined in the
standard of CCITT V.24.
Normally only some of these are used.
CCIT EIA Signal
name
Description 9 pin
connector
25 pin
connector
101 AA PG Protective ground 1
102 AB SG Signal ground or common return 5 7
103 BA TxD Transmitted data 3 2
104 BB RxD Received data 2 3
105 CA TRS Request to send 7 4
106 CB CTS Ready for sending (clear to send) 8 5
107 CC DSR Data set ready 6 6
108/2 CD DTR Data terminal ready 4 20
109 CF DCD Receive line signal detector 1 8
y Signal assignment
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