Connect Tech DFlex-4/104 Appendix H: 20mA Current Loop Option

Chapter 4: Appendix H - 20mA Current Loop 4-27

DFlex-4/104 User's Manual, ver. 0.04

Appendix H: 20mA Current Loop Option

You may order DFlex-4/104 adapter with 20mA current loop

Serial Line Interface Modules. The 20mA current loop electrical

interface provides a reliable high speed serial link over long

distances that offers superior noise immunity and multi-drop

network connectivity.

WARNING

You must insert Serial Line Interface Modules into all of the SLIM

sockets to attain the communications functionality of your

DFlex-4/104 adapter.

Installation

The DFlex-4/104 adapter has two SLIM sockets that accept Serial

Line Interface Modules. SLIM 1 socket interfaces ports 1 and 2.

SLIM 2 socket interfaces ports 3 and 4. Please refer to Chapter

2: Hardware Installation for the location of the SLIM sockets

and to Appendix D: SLIM Insertion/Removal for the proper

procedures to installing and removing SLIMs.

Your DFlex-4/104 adapter and Serial Line Interface Module

(SLIM) are very sensitive to static electricity. Make sure that

before you remove them from the anti-static shipping bag, you

wear an anti-static wrist-band. When you remove them from the

anti-static bag, handle them only by the edges and place them on

the anti-static bag or an anti-static mat.

Contents

Main Connect Tech Inc. DFlex-4/104 Page LIMITED WARRANTY Copyright Notice Trademark Acknowledgment Page Page Table of Contents Page List of Tables List of Figures Page Chapter 1: Introduction Page Page Page Page Page Chapter 1: Introduction 1-5 DFlex-4/104 User's Manual, ver. 0.04 Figure 2: DFlex-4/104 - 16 port configuration Page Page Page Page Page Chapter 2: Hardware Installation Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Chapter 3: Software Installation Page Page Page Page Utilities Chapter 4: Appendices Page Appendix A: Specifications Page Appendix B: Connectors/Pinouts Page Page Page Appendix C: Factory Settings Page Page Page Appendix D: SLIM Insertion/Removal Page Appendix E: RS-232 SLIM Option Page Page 4-16 Chapter 4: Appendix E - RS-232 Option Table 8: SLIM pinouts Note: earlier versions of the current loop SLIM have pins 22, 23, 32, and 33 tied low. Appendix F: RS-485/422 Options Page Chapter 4: Appendix F - RS-485/422 Options 4-19 DFlex-4/104 User's Manual, ver. 0.04 Figure 14: RS-485/422 SLIM partial schematic 4-20 Chapter 4: Appendix F - RS-485/422 Option Table 9: SLIM pinouts Note: earlier versions of the current loop SLIM have pins 22, 23, 32, and 33 tied low. Page Page Appendix G: RS-423 Options Page Chapter 4: Appendix G - RS-423 Options 4-25 Table 10: SLIM pinouts Note: earlier versions of the current loop SLIM have pins 22, 23, 32, and 33 tied low. Page Appendix H: 20mA Current Loop Option Page Page 4-30 Chapter 4: Appendix H - 20mA Current Loop Table 11: SLIM pinouts Note: earlier versions of the current loop SLIM have pins 22, 23, 32, and 33 tied low.