Black Box IC477A-F-R2 User Manual download pdf (Page 15)

ASYNC 232↔422/485 CONVERTER

4.1 Connection to the RS-485 Interface

must

4.1.1 4-W

IRE

ONNECTION

SING THE

DB25 (IC477A-X-R2

AND

IC478A-X-R2)

Converter RS-485 (530) Device

Signal DB25 Pin DB25 Pin Signal

XMTA 2......................................3 RCVA

XMTB 14....................................16 RCVB

RCVA 3......................................2 XMTA

RCVB 16....................................14 XMTB

NOTES

1) In the pinout above “A” means positive and “B” means negative.

4. Installation

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Black Box IC477A-F-R2 User Manual Page 15