User guide

ManualsBrandsAmerican Magnetics ManualsEquipment187 Self-Compensating Liquid Level Controller

61

Appendix

RS-232/422 Connector

Table A-4.

EIA-530 Device-to-Model 187 connections for

RS-422

operation.

EIA-530 Device (DTE)

DB-25 Pin

Model 420 (DCE)

DB-9 Pin

DTE

Function

29

TX

−

31

RX

−

47

RTS

−

58

CTS

−

13 6 CTS+

14 3 TX+

16 2 RX+

19 4 RTS+