B & B ELECTRONICS

485HSPR

Card Type Transceiver
Maximum Transfer Rate 115.2Kbps
Topology Star
Data Bus External


wpeF0.jpg (8898 bytes)

CONNECTIONS

Function

Label

Function

Label

DB-25 male port (RS-422/485)

CN1

DB-25 female port (RS-232)

CN2


USER CONFIGURABLE SETTINGS

Function

Label

Position

» Echo enabled JP2 Open
  Echo disabled JP2 Closed
Note:  Echo should be enabled for RS-422 and RS-485 4 wire modes.  Echo should be disabled for RS-485 2 wire mode.


TRANSCEIVER CONTROL SELECTION

Setting

JP1 JP3 JP4
 

Transceiver is always enabled

Closed Open Open
 

RTS controls transceiver

Open Closed Open
 

Send Data Circuit controls transceiver

Open Open Closed