Siemens DTU3005-B Manual del operador descargar pdf (Pagina 34)

5 Transferring Project Files

30 Siemens Energy & Automation, Inc.

Before using these commands, you must physically

connect Port 3 of the DTU3005P to your computer

using a null modem cable. Be sure that power is

supplied to the DTU3005P.

For the null modem cable, pins 2 and 3 (RXD and

TXD) must be crossed. On the computer end of the

cable, pins 7 and 8 (RTS and CTS) should be con-

nected together. Pins 1, 4, and 6 (DCD, DTR and

DSR) should be connected together. The cable dia-

gram is illustrated below in Figure 5.2.

Figure 5.2 Null Modem Cable Connection

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