45
Null Modem Cable Pin
Assignments
Table 45-1 outlines the pin assignments for a 9-pin serial port to a 25-pin serial port
null modem cable.
Table 45-1
Null Modem Cable Pin Assignments
25 Pin
9 Pin
2 (transmit data)
2 (receive data)
3 (receive data)
3 (transmit data)
4 (request to send)
8 (clear to send)
5 (clear to send)
7 (request to send)
6, 8 (data set ready, carrier detect)
4 (data terminal ready)
7 (ground)
5 (ground)
20 (data terminal ready)
6, 1 (data set ready, carrier detect)
Содержание 3315SE
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