Checks and
recovery
• For a system with no redundant Ethernet connection configured, you can either:
◦ Install a redundant Ethernet connection.
◦ See Wiring the communication, in the Installation instructions for more information
about installing the Ethernet communication.
◦ Alternatively, disable the Ethernet redundancy alarm:
◦ Set the alarm to Not enabled by configuring the parameter:
◦ Configure > Parameters > System power management > Network > Ethernet redundancy
broken
• For a system with a redundant Ethernet connection already configured:
◦ Check the Ethernet cabling has not been accidentally damaged or unplugged.
◦ Replace any damaged cables and ensure all Ethernet cables are plugged in securely.
◦ Check the Ethernet cabling used for the DEIF network has been correctly plugged in to the PCM
hardware module.
CAUTION
The Ethernet ports on the PSM are only used for internal communication.
◦ Check the Ethernet cables used for the connection meet the DEIF Ethernet network cable
specification.
◦
See Hardware, Ethernet cable in the Data sheet for more information about the type of
Ethernet cable.
INFO
It is recommended to install a redundant Ethernet connection. This ensures continued operation of the system
should one of the Ethernet cables become damaged or faulty.
PPM 300 Operator's manual 4189340910 UK
www.deif.com Page 147 of 157
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