beautypg.com

PATLITE NHL User Manual

Page 35

background image

35

3

3.9.2 Ping Monitoring Function (Nodes 21 to 24)

The following explains the function of operation for setting up the frequency of transmissions and the number

of transmissions within the frequency number. The monitor period can be set up from 1 to 600 seconds for the

Ping monitor period.

The following is an example of setting the number of times to transmit with a value of "2" and "3".

With the number set for "2", the transmission will send two "packets", and if judgement of an abnormal condition

continues to be generated twice, the Ping Monitor Condition detects an abnormality. If the transmission number

is set to "3", then the transmission will send three "packets" during the Ping monitoring period. (Refer to the

following figure)

A judgement of abnormality is detected at the time of the following monitoring periods.

1. If one ping response out of three "packets" is recieved, then judgement of no abnormality is detected.

2. If all three ping responses were not answered among the three "packets", it counts as one time for judging

that an abnormality is occuring.

3. Even in the following time period, if there is no ping response, the number of times to count an abnormality is

counted as one time. The total number of transmission times is set to "2", and the Ping Monitoring Abnormality

Condition is executed.

3.9.2 Ping Monitoring Function (For Ping Monitor Setting Screen No. 21 to 24)

1st time : Reply

2nd time : No Reply

3rd time : Reply

1st time : No Reply

2nd time : No Reply

3rd time : No Reply

1st time : No Reply

2nd time : No Reply

3rd time : No Reply

Ping

Transmission

Ping

Reply

Set up with the Web

Setup Tool

Monitoring

Side

NHL Side

Ping Monitoring starts

after setup

completion

Ping Monitoring

Condition

Ping Monitoring

Abnormal Condition

Ping Monitoring Period

Judgment: No Abnormalities

When there is a Ping

response during a Ping

monitoring period

Judgment: Abnormal

(Judging “Abnormal” the 2nd time)

Judgment: Abnormal

(Judging “Abnormal” the 1st time)

With the number of transmissions set

to "2", the judgement decides its a

Ping monitor abnormality.

Execution starts when abnormality is detected

When there is no

Ping response at all

during a Ping

monitoring period

When there is no

Ping response at all

during a Ping

monitoring period

Please

If a "Clear" operation (Refer to 3.11 “Clear Control Function”) is executed when a monitoring detection

is active, it will return to the monitoring condition. With the double-push clear setting, the status will

return to the monitoring condition on the first press of the "CLEAR" button.

Note

When the Abnormality Judgement Value is set as a "1", if the next Ping Monitoring Abnormality Condition

is judged as "no abnormality", then the number of judging abnormality is cleared (back to "0").