Denso BHT-825QW Manual do Utilizador descarregar pdf (Página 154)

139

2D Code Handy Terminal

PING Echo Request Transmission Timing (SEND TYPE)

Two types of echo request send timings are available: TYPE 1 and TYPE 2.

ν TYPE1

After sending an echo request, PING waits for the period specified at INTERVAL and then sends an echo

request again. For TYPE 1, the relationship between the INTERVAL and TIMEOUT should be

“INTERVAL ≥ TIMEOUT.”

ν TYPE2

After sending an echo request, PING waits for an echo reply to be received or for a timeout to occur.

Following that, PING waits for the period specified at INTERVAL and then sends the next PING echo

request. For TYPE 2, no relationship between the INTERVAL and TIMEOUT is required.

If PING receives an echo reply:

If a timeout occurs:

Sends an echo request

Receives an echo reply

Timeout period

Interval

Sends an echo request

Receives an echo reply

Interval

Sends an echo request

Timeout period

Timeout occurs

Interval

Sends an echo request

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Denso BHT-825QW Manual do Utilizador Página 154