Black Box IC476A-F-R2, IC476A-M-R2, IC477A-F-R2, IC477A-M-R2, IC478A-F-R2, IC478A-M-R2 4. Installation

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

Contents

Main FEBRUARY 1998 IC476A-F-R2 IC477A-M-R2 IC476A-M-R2 IC478A-F-R2 IC477A-F-R2 IC478A-M-R2 Async 232422/485 Converter Page Page Page Page CHAPTER 1: Specifications 1. Specifications Page Page Page Page Page CHAPTER 3: Configuration Switch S1 Summary Table Position Function Factory Default Page CHAPTER 3: Configuration Typical Switch Applications Switch Settings Point-to-Point Multipoint 4W 4W HDX 2W 4W 2W 4. Installation 4.1 Connection to the RS-485 Interface Converter RS-485 (530) Device Signal DB25 Pin DB25 Pin Signal NOTES CHAPTER 4: Installation Converter RS-485 Device IMPORTANT! Page Converter Signal RS-485 Signal IMPORTANT! Page Page APPENDIX A: RS-232C Pin Configurations STANDARD DTE SETTINGDIRECTION DIRECTION DIRECTION DIRECTIONSTANDARD DCE SETTING Appendix A. RS-232C Pin Configurations

Black Box 4. Installation

Models: IC476A-F-R2 IC476A-M-R2 IC477A-F-R2 IC477A-M-R2 IC478A-F-R2 IC478A-M-R2

4.1 Connection to the RS-485 Interface

Converter RS-485 (530) Device

Signal DB25 Pin DB25 Pin Signal

NOTES