ASP Portable BCR Manual de usuario descargar pdf (Pagina 10)

Intelligent RS-485 and RS-422 Adaptors

Technical Information

This section of the manual details the pinouts of the Intelligent RS-485

and RS-422 Adaptors.

RS-232 Connector

The female DB-25 connector on the Intelligent RS-485 and RS-422

Adaptors is designed to plug straight into a DB-25 or DB-9 serial port

on your PC, using a standard PC serial cable. Listed below are the

connector pinouts, along with the equivalent pins on both DB-25 and

DB-9 PC serial port connectors, in case you want to make your own

cable.

Pin Function DB-25 on PC DB-9 on PC

2 Data from PC 2 3

3 Data to PC 3 2

7 Signal Ground 7 5

Note that the Intelligent RS-485 and RS-422 Adaptors use only the

transmit and receive data lines and signal ground. However, since

some PC’s may require the RS-232 handshaking lines to be correctly

set, the Intelligent RS-485 and RS-422 Adaptors connects the RTS and

CTS lines together (pins 4 and 5), and the DSR, CD and DTR lines

together (pins 6, 8 and 20).

RS-485 Connector

The RS-485 port on the Intelligent Adaptor is a standard DB9 Female

connector, wired as follows:

Pin Function

1 & 2 Power Supply -ve

3 Protective Ground

4 & 5 Power Supply +ve

6 & 7 RS-485 B (+ve)

8 & 9 RS-485 A (-ve)

1 2 ... 5 6 7 8 9 10 11 12 13

Sin comentarios

ASP Portable BCR Manual de usuario Pagina 10