HEIDENHAIN iTNC 530 Service Manual page 180

If no TNCremoNT connection is established, check by pinging, whether the ...
„Pinging"
... function properly.
"Ping-loopback-test" on the laptop (test of the Ethernet card of the laptop):
"Ping-loopback-test" on the control (test of the Ethernet card of the control):
Pinging from the laptop to the control (test of the connection):
Figure: Pinging from the laptop to the control successful
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Note
If the following error message is displayed during connection establishment, ...
... the external access to the control is not permitted!
In this case press the MOD key and subsequently theEXTERNAL ACCESS ON/OFF soft key
in order to permit access.
Ethernet card in the laptop
Ethernet card in the control
Connection of both cards via Ethernet
In the prompt enter the ping command followed a blank and the IP address of the Ethernet
card of the laptop (e.g. ping 160.1.178.23).
Confirm with ENTER. --> If the Ethernet card functions it will respond!
If the Ethernet card does not function, a timeout message is displayed.
Enter the code number NET123, confirm with ENTER and subsequently press the PING soft
key.
Enter the IP address of the iTNC.
Confirm ENTER. -->If the Ethernet card functions, you receive the answer HOST RESPOND.
If the Ethernet card does not function, the TIMEOUT message is displayed.
In the prompt enter the ping command followed by a blank and the IP address of the control.
Press ENTER to confirm. --> If the connection works, the control will respond!
If the Ethernet card does not function, a timeout message is displayed.
HEIDENHAIN Service Manual iTNC 530