Siemens SIMATIC TI505 Manual de Serviço descarregar pdf (Página 26)

Chapter 4: Communications Parameters 23

Dual Communication Port Module TI 500 Series

The Dual Communication Port Module (DCPM) has two RS232/423 ports that work independently

and permit simultaneous communication. The Operator Station does not support RS423. RS232 must

be used for communications. The two ports are identical to the programming port on the PLC. All

communication is serial with one stop bit at all baud rates, except at 110 baud, which has two stop bits.

The ports may be configured for a baud rate ranging from 110 to 19.2K, and also for DTE or DCE

mode. Standard communication parameters for communicating with TI PLCs are shown below.

These parameters are given only as a starting point and may be changed to meet the demands of your

application.

7 Data Bits

1 Stop Bit

Odd Parity

9600 Baud

Under the front access cover are two dipswitch banks. The upper dipswitch bank is for configuring

port 1, while the lower dipswitch bank is for configuring port 2. The configuration switches are

shown in the following figure.

Dipswitch Bank Locations

Set switch 4 to the 1 position to select DTE mode or into the 0 position to select DCE mode. Switches

5 through 8 are not used. The Baud Rate Selection table is shown below.

Baud Rate 110 300 600 1200 2400 4800 9600 19.2K

Switch 1

0 1 0 1 0 1 0 1

Switch 2

0 0 1 1 0 0 1 1

Switch 3

0 0 0 0 1 1 1 1

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Siemens SIMATIC TI505 Manual de Serviço Página 26