Black Box IC107AE-R3, IC107C-R3, IC107A-R3 manual Table A-2. Pinning of the RS-422/485 connector

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RS-232RS-422/485 CONVERTER (DATA ONLY)

 

Table A-2. Pinning of the RS-422/485 connector

 

(4-position terminal block).

Pin/Signal

Function

TXA and TXB

Data received by the Converter from the RS-232 port is

 

transmitted out of the unit over twisted-pair wires using

 

these two outputs. The “TX” LED indicates the state of these

 

two leads. When the TXA lead is positive with respect to the

 

TXB lead (a zero is being transmitted), the “TX” LED is lit.

RXA and RXB

These are the received data inputs for the RS-422/485 port.

 

The status of these leads is monitored by the “RX” LED.

 

When the RXA lead is positive with respect to the RXB lead

 

(a zero is being received), the “RX” LED is lit.

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Contents RS-232↔RS-422/485 Converter Data Only European Union Declaration of Conformity RS-232↔RS-422/485 Converter Data only NOM STATEMENT, Trademarks Contents User Controls SpecificationsMtbf Introduction Wire full-duplex point-to-point applicationConfiguration Configuration Device InstallationRS-232 Circuitry OperationBlock diagram of Converter functions in DCE mode RS-422/485 Circuitry Calling Black Box TroubleshootingAppendix Pinouts Table A-1. Pinning of the RS-232 connector DB25 femaleTable A-2. Pinning of the RS-422/485 connector Page Page Copyright 2001. Black Box Corporation. All rights reserved