OPTO 22 SNAP PAC R SERIES, Руководство пользователя

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TROUBLESHOOTING THE SNAP PAC R-SERIES CONTROLLER
SNAP PAC R-Series Controller User’s Guide 56
Keep this window open on your screen when you call Product Support.
Communicating with the Controller
If you attempt to connect to the controller using its IP address and you cannot, first check the following:
• Make sure the controller has been turned on and the LNK and STAT LEDs for the connected Ethernet
interfaces are lit (see
“Connectors and LEDs” on page 30 .)
• Make sure the controller is mounted on a SNAP PAC rack.
• Make sure the controller’s hold-down screw has been tightened so that it is firmly attached to the rack.
• Verify that you typed in the correct address for the controller. Check the label on the side of the controller,
where the IP address should be written. There are two labels, one for each Ethernet port, so make sure to
look at the right one.
• Make sure the controller has been assigned a valid IP address and subnet mask. SNAP PAC R-series
controllers come from the factory with a default IP address of 0.0.0.0, which is invalid. The default subnet
mask is 255.255.255.0. To assign an IP address and subnet mask, see the
PAC Manager User’s Guide .
• Make sure that no red LEDs on the controller are lit. A red LED could indicate a voltage supply problem.
Each controller
should have its own power supply. The controller needs a minimum of 5.0 VDC,
measured at the rack.
• Make sure you have up-to-date drivers installed on your computer’s Network Interface Card (NIC).
Contact your system administrator or the manufacturer of the card for help.
• Make sure you have Administrator privileges on your computer and that any firewall in the computer
(such as the built-in firewall in Windows) is temporarily disabled before you try to assign or change IP
addresses, load firmware using PAC Manager’s Maintenance window, or work with files on the controller.
BootP and FTP cannot function through a firewall in the PC. Firewalls in a router are less likely to be a
problem unless certain ports (such as FTP client) have been blocked, either by default or on purpose.