Echelon SmartServer 2.2 Hardware Manual de usuario descargar pdf (Pagina 23)

The following table lists the enclosure markings for the RS-232 and RS-485 port screw terminals and

on the SmartServer and their connection types.

Screw Terminal

Enclosure Marking

EIA-232/RS-485 Connection

RTS

RS-232 RTS

CTS

RS-232 CTS

RXD

RS-232 Receive

TXD

RS-232 Transmit

GND

RS-232 ground/RS-485 ground (as needed)

Shield GND

RS-485 cable shield

RT-

RS-485 (-)

RT+

RS-485 (+)

Connecting an External GSM Modem to the RS-232 Serial Port

You can connect an external GSM modem to your SmartServer using the RS-232 serial port. To do

this, order a special cable from EBV Elektronik (part number ECH-RS232/500). For more

information, go to the EBV Web site at www.ebv.com. The serial connector from the modem must be

attached to the RS-232 ports on the SmartServer as specified in the following table.

External GSM

Modem DB 9 Pin

Screw Terminal

Enclosure Marking

N/A

RXD

TXD

N/A

GND

N/A

RTS

CTS

N/A

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Echelon SmartServer 2.2 Hardware Manual de usuario Pagina 23