ALTERNATIVE CONNECTIONS REFERENCE

MAIN INTERFACE

A

The main serial interface is compatible with the following electrical standards:

RS232

RS485 full-duplex

RS485 half-duplex

Do not connect GND and GND_ISO to different (external) ground references. GND and GND_ISO are internally connected through filtering circuitry which can be permanently damaged if subjected to voltage drops

CAUTION over 0.8 Vdc.

Details regarding the connections and use of the main interface selection are given in the next paragraphs.

9-pin D-sub Female Connector Pinout

Pin

RS232

RS485

 

 

Full Duplex

5

1

 

 

2

TX

TX485 +

 

 

3

RX

RX485 +

9

6

5

GND_ISO

GND_ISO

9-pin D-sub Female Connector

7

CTS

RX485 -

8

RTS

TX485 -

 

 

RS232 Interface

The main serial interface is used for communication with the Host computer through the PWO and allows both transmission of code data and controller configuration.

The following pins of the 9-pin connector are used for RS232 interface connection:

Pin

Name

Function

2

TX

Transmit

3

RX

Receive

5

GND_ISO

Main signal ground

7

CTS

Clear to send

8

RTS

Request to send

The RTS and CTS signals control data transmission and synchronize the connected devices.

If the RTS/CTS hardware protocol is enabled, the SC6000 activates the RTS output to indicate a message can be transmitted. The Host must activate the CTS input to enable the transmission.

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