B&B Electronics RS-232 Digital I/O Module 232SDD16 Manual de usuario descargar pdf (Pagina 6)

232SDD16-1005 Manual 7

B&B Electronics -- PO Box 1040 -- Ottawa, IL 61350

PH (815) 433-5100 -- FAX (815) 433-5104

Table 2.2 - RS-232 Connector Pinout

DB-25S

Pin #

Signal

Direction at

232SDD16

Notes

2 Transmit Data (TD) Input Connection is required.

3 Receive Data (RD) Output Connection is required.

4 Request to Send

(RTS)

Input May be used to power

unit if kept high.

7 Signal Ground (SG) Connection is required.

20 Data Terminal

Ready (DTR)

Input May be used to power

unit if kept high.

Table 2.3 - 232SDD16 To DTE Connections

232SDD1

6 Pin #

Signal

DTE DB-

Connection

DTE DB-9

Connection

2 Transmit Data (TD) 2 3

3 Receive Data (RD) 3 2

4 Request to Send (RTS) 4 7

7 Signal Ground (SG) 7 5

20 Data Terminal Ready (DTR) 20 4

Table 2.4 - 232SDD16 To DCE Connections

232SDD16

Pin #

Signal

DCE DB-25

Connection

DCE DB-9

Connection

2 Transmit Data (TD) 3 2

3 Receive Data (RD) 2 3

4 Request to Send (RTS) 5 8

7 Signal Ground (SG) 7 5

20 Data Terminal Ready

(DTR)

6 6

8 232SDD16-1005 Manual

B&B Electronics -- PO Box 1040 -- Ottawa, IL 61350

PH (815) 433-5100 -- FAX (815) 433-5104

Power Supply Connections

Power to the 232SDD16 can be supplied by the RS-232 serial

port handshake lines (RTS, DTR) or by an external power supply

through the 2.5mm power jack or from the I/O connector. Most serial

ports can provide enough power to supply the 232SDD16’s 15

milliamp requirement. If you plan to use this method to power the

unit, your software must set the RS-232 RTS and DTR lines to the

high state. An external power supply must be able to supply 8 to 16

Vdc at 35ma.

NOTE: Power requirements of the module does not include the

power consumption of any external devices connected to the

module. Therefore, any current that is sourced by the digital outputs

must be added to this value and the current must not exceed the

maximum output source current. Refer to the 232SDD16

Specification Section of this manual.

1 2 3 4 5 6 7 8 9 10 11 ... 26 27

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