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8. You should also see the Packets Received and Packets Sent count on the Ethernet I/O Status page in the camera
increment by at least 4.
9. If the output of the ping command shows request timeouts, try the following:
•
Verify that the camera is located on the correct subnet, has the correct IP address, and is connected to the
correct switch or router.
•
If you are running several overlapping subnets, you may want to consult your IT person to ensure that the
routing for the network is configured correctly.
•
If you are trying to access the camera through a gateway or a VPN router, please verify that these devices
are configured such that they allow traffic from iVu camera to reach the destination device.
9.10.3 Industrial Protocols Troubleshooting
Modbus/TCP Protocol
Modbus/TCP protocol relies on the fundamental TCP/IP connectivity to establish connections and transport data. Once you
have verified Networking and TCP/IP connectivity, you should have little or no problems establishing a Modbus/TCP
connection.
iVu supports one Modbus/TCP connection from a single client, and will reject additional connection requests.
Prior to attempting to establish the Modbus/TCP connection, you will have to configure your device, and teach it about the
iVu sensor. You will have to tell it the IP address of the iVu sensor that you have previously configured. Configurations
steps vary for each device, so you will have to consult the appropriate manual for these steps.
If your device has user-configurable Modbus/TCP port, please verify that it is set to port number 502. iVu will not accept
connections on any other port.
Once you have established a Modbus/TCP connection, you can verify that iVu has accepted it by going to the System >
Communications > Industrial Ethernet > Status page, and viewing the connection status:
If you experience issues accessing data, please consult the relevant sections of the manual for the Modbus/TCP register
maps supported by the sensor, and consult the Industrial Protocols Log. The log, when configured to Detailed Logging
mode, provides record of individual register access sequence, and records any errors:
EtherNet/IP and PCCC Protocols
EtherNet/IP and PCCC protocols rely on CIP protocol to establish communications and exchange data. CIP protocol, in turn,
utilizes TCP/IP.
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