Schneider Electric IP67 manual Node-Guarding and Life-Guarding Monitoring Protocols

Models: IP67

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CANopen Network Interface

"Node-Guarding" and "Life-Guarding" Monitoring Protocols

Introduction

Error monitoring protocols are used to detect communication errors on the network.

 

The default monitoring method, "Node-Guarding", consists in the master controlling

 

the slaves. It is possible to add "Life-Guarding" control of the master by the slaves.

 

 

 

Note: The simultaneous use of both monitoring methods, "Guarding" and

 

"Heartbeat", is impossible. Should both methods be activated at once, the

 

equipment will only use the "Heartbeat" monitoring method.

Definition of

 

 

The "Life-Time" parameter is calculated as follows:

"Life-Time"

"Life-Time"= "Guard-Time" x "Life-Time-Factor"

 

 

The object 100CH contains the ''Guard-Time'' parameter expressed in milliseconds.

 

The object 100DH contains the ''Life-Time-Factor" parameter.

Activation of

 

When one of the two parameters "Life-Time-Factor" or "Guard-Time" is set to "0"

Monitoring

(default configuration), the device does not perform monitoring (no "Life-Guarding").

 

To activate monitoring over time, you must enter a value (minimum 1) in the object

 

100DH and specify a time in ms in the object 100CH.

 

Common typical values for the "Guard-Time" parameter lie between 250 ms and 2 s.

Reliable

 

To enable reliable and secure operation, the user must enter a "Life-Time-Factor"

Operation

with a minimum value of 2.

 

When the value 1 is used, should a delay occur due to the processing of high priority

 

messages or internal processing on the "Node-Guarding" master, the device

 

switches back to the "Pre-Operational" default state without generating any errors.

 

 

 

WARNING

 

RISK OF UNINTENDED DEVICE OPERATION

 

Set the "Life-Time-Factor" (object 100DH) to a minimum value of 2 to prevent any

 

inadvertent change of state to "Pre-Operational" state. Depending on the I/O

 

configuration, an inadvertent change of state may result in unintended device

 

operation.

 

Failure to follow this instruction can result in death, serious injury, or

 

equipment damage.

 

 

 

 

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1606218 02 08/2006

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Schneider Electric IP67 manual Node-Guarding and Life-Guarding Monitoring Protocols