Lenze DDS Global Drive PLC Developer Studio Manual do Utilizador descarregar pdf (Página 12)

2.3 Monitoring mechanisms

Function library LenzeCanDSxDrv.lib

Introduction

2−4

LenzeCanDSxDrv.lib EN 1.2

2.3.2 "Node Guarding"

Unlike the "Heartbeat" monitoring mechanism, "Node Guarding" requires a polling message from the

monitoring bus device (NMT master).

Node

Life

Time

Node

Guarding

Event

Indication

Response

Confirmation

Response

Request

Indication

Node

Guard

Time

NMT Master NMT Slave

RTR

Life

Guarding

Event

Node

Life

Time

Stopped

Operational

Pre-Operational

Boot-Up Event

Toggle bit

s: NMT Slave state:

127

· The monitoring bus device (NMT master) cyclically polls every bus device to be monitored

(NMT slave) using a node−specific remote transmission request telegram.

· As response, the bus device to be monitored (NMT slave) returns its communication status.

· Unless the monitoring bus device (NMT master) receives the message from the bus device to

be monitored (NMT slave) within the selected monitoring time ( NodeLifeTime), a "Node

Guarding" event will be indicated.

· If the status of the monitoring bus device (NMT master) is not polled within its "Node Lifetime",

a "Life Guarding" event will be indicated at the bus device to be monitored (NMT slave).

1 2 ... 7 8 9 10 11 12 13 14 15 16 17 ... 25 26

Comentários a estes Manuais

Sem comentários

Lenze DDS Global Drive PLC Developer Studio Manual do Utilizador Página 12

Comentários a estes Manuais

Manuais e produtos relacionados com Hardware Lenze DDS Global Drive PLC Developer Studio