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The dialog box shows the message A timeout occurred.
If a station cannot be found, this can be due to the following reasons:
OPC Server or PLC Engine Collect
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The server service has stopped.
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Configuration via TCP/IP or Configuration via H1
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The selected station is switched off.
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A network cable is not properly connected or faulty.
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A switch, hub, router or gateway is switched off.
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The station is connected behind a router and therefore not accessible.
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On the operating PC, the protocol to be used for connecting to the station (H1 or TCP/IP) has not been installed or configured properly.
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The H1 or TCP/IP protocol on the remote network station has not been installed or configured properly.
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A station (e.g. a reference router) has disabled the forwarding of the frames.
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The firewall has not been configured properly.
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NOTE:
Stations connected behind a router cannot be discovered automatically. For these, you need to define a direct connection using the New button (see Edit Access to a Station in Your List).
Serial connection
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The connection cable is not plugged in.
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The pins of the connection cable are not assigned correctly. The connection to the station only uses three wires: Send data, receive data, signal ground.
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The interface adapter installed in your PC is faulty.
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The interface of your PC is used by another task.
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