Sierra 595 Guide de l'utilisateur télécharger pdf (Page 59)

Configuring the MP Modem to Report GPS and I/O

Data

Rev 1.4 Draft Mar.08 59

Adigitalinputcanbeconnectedtofourofthepinsonthe

DB15HDconnector:Pins3,4,11,and12.(Pins3and11could

alternativelybeusedfordigitaloutput.)

Note: Before using the input/output lines, you must configure them as

inputs or outputs.

Typicallyadigitalinputdeviceshouldbeconnectedbetween

Ground(Pin10)andtheinpu tport(Pin3,4,11,or12).

Figure 7-2: A button wired to Pin 4 (digital input) and Pin 10 (Ground).

Thepinsreportalogichighonaninputof3.45VDC.An

internalpull‐upresistorprovidesahighconditionwhenthe

switchisopen.

Thedigitalinputpinsreportalogiclowonaninputbetween

VDCand0.8VDC.Sinkingtheinputpintogroundyieldsa

logiclow(0x00)whentheportispolled.

IfyouconfiguretheMPmodemtosenddatatoanetwork

server,digitalinputdatacanberemotelymonitored.

Example: panic button connections

AnI/Ocableforapanicbuttonrequiresawiretooneofthe

digitalinputorI/Opins(suchas#3)and onewiretothe

Groundpin(#10).

1 2 ... 54 55 56 57 58 59 60 61 62 63 64 ... 85 86

Pas de commentaire

Sierra 595 Guide de l'utilisateur Page 59