
RS-232 25-Pin Port Connector Pinouts
This section describes the serial port pinouts for the
Table
Connector Pinouts
Pin | US | CCITT | DIN |
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1 | CHS GND | 101 |
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2 | Tx | 103 | D1 |
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3 | Rx | 104 | D2 |
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4 | RTS | 105 | S2 |
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5 | CTS | 106 | M2 |
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6 | DSR | 107 | M1 |
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7 | GND | 102 |
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8 | DCD | 109 | M5 |
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20 | DTR | 108 | S1 |
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22 | RI | 125 | M3 |
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23 | SR | 111 |
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Note: The RMON MultiProbe Module asserts pins 20 and 4 continuously. Pins 20 and 4 are
Specifications A - 5