Problem Action
Does the communication work with the
Windows Administrator rights?
Sometimes the communication configuration is updated wrongly with or without the
administrator rights in the Windows Vista and Windows 7 operating systems.
• If UAC is enabled, run PCM600 using the administrator account.
Does rebooting the IED help resolve the
communication issues?
It is possible that the communication is occasionally reserved in the IED.
• Reboot the IED.
Can multiple tools be used simultaneously to
configure the IED?
In some cases, when two users access the same IED at the same time, the communication
fails.
Can data be read from the IED by using
multiple tools at the same time?
Some IEDs do not support the reading of disturbance recording simultaneously from two
clients.
Is the IED under heavy load? Operations in the IED can have a high priority and consume most of the IED resources. This
can break the communication with PCM600. An example of a resource-exhausting operation
is the storing of a disturbance recording.
• Ensure that there are no ongoing processes in the IED and try to communicate again.
Are there multiple devices with the same
MAC in the same network?
• Try to communicate with a device directly from the front port when the rear port cable is
disconnected.
Are the external network devices working
properly?
Sometimes routers, switches and media converters can malfunction.
• Try to communicate with a device directly from the front port when the rear port cable is
disconnected.
Is the communication time-out too short?
• In the Object Properties window, select the value Fixed with High Latency for
Connection Type. The Time-out property becomes visible.
• Define the time-out for long-delay networks.
• PCM communication uses the time-out value specified by the user.
• When selecting Fixed, the default time-out is used.
Does Online Configuration Wizard or
reading configuration fail?
• Make sure that your personal firewall allows inbound FTP connections. Reading
configuration files from certain IEDs requires the possibility for inbound FTP
connections.
Is uploading recordings for REF615 Ver.5.1
with the scheduler interrupted and the error
message "Could not connect to FTP server
in IED" shown?
The secure connection to the IED has not been "trusted forever" before using the scheduler.
• Click Trust forever, when a security warning appears while uploading manually from the
Disturbance Handling tool. The recordings are then uploaded.
Does secure communication sometimes fail
with the 650/670 series IEDs?
PCM600 opens an SSL connection to the device using the .NET SslStream implementation.
In certain cases the SslStream.AuthenticateAsClient call takes a long time to authenticate, for
example, if the latest root certificates are not updated on the computer.
Disable the Automatic Root Certificates Update feature via GPO to block Internet access.
• To turn off Automatic Root Certificates Update via Local Group Policy Editor, click Start
and then click Run.
• Type gpedit.msc and click OK.
• If the User Account Control dialog box appears, confirm that the action it displays is
correct and click Continue.
• Under computer configuration, double-click Administrative Templates, double-click
System, double-click Internet Communication Management, and then click Internet
Communication settings.
• Double-click Turn off Automatic Root Certificates Update, click Enabled, and then click
OK.
Section 4 1MRS757866 C
Use cases for operation and field
24 PCM600
Getting Started Guide
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