Advantech PCI-1610 Uživatelský manuál stáhnout pdf (Strana 103)

93 Chapter 5

For DTE to DCE connections, use a straight through cable (i.e., you don't

have to reverse lines 2 and 3, lines 4 and 5, and lines 6 and 20 since, in

general, the DCE RS-232 interfaces are reversed themselves).

Therefore, if you are not using CTS, RTS, DSR ,DTR and DCD signals,

please short pins 4 and 5 together, and please short pins 6, 8,and 20

together.

Table 5.29: Modem Connections

DB-25 Male Modem (DCE)

Pin Signal Pin Signal

2 TxD 2 RxD

3 RxD 3 TxD

4RTS 4 CTS

5CTS 5 RTS

6DSR 6 DTR

7 GND 7 GND

20 DTR 20 DSR

8 DCD 8 DCD

Table 5.30: Terminal without Handshake

DB-25 Male Terminal, PC (DTE)

Pin Signal Pin Signal

2TxD 3 RxD

3 RxD 2 TxD

RTS —

CTS —

7 GND 7 GND

DSR —

DTR —

DCD —

1 2 ... 98 99 100 101 102 103 104 105 106

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Advantech PCI-1610 Uživatelský manuál Strana 103