Maintenance And Service; Firmware Update; Replacing The Pn/Can Link - Siemens Simatic Operating Instructions Manual

Maintenance and service

11.1

Firmware update

Procedure
1. Set the S7 CPU to "STOP".
2. Start the update of the PN/CAN LINK in the TIA Portal. Depending on the configuration in
the TIA Portal, the PN/CAN LINK resumes running on its own after a successful update
and waits for configuration information from the S7 controller.
3. For operation, set the S7 CPU back to "RUN".
Critical plant state
The Ethernet switch installed in the PN/CAN LINK is only in operation after run-up of the
PN/CAN LINK. A restart of the PN/CAN LINK interrupts the Ethernet switch function.
Existing Ethernet connections over the switch are interrupted for the duration of the
PN/CAN LINK run-up. This can result in critical plant states.
11.2

Replacing the PN/CAN LINK

Below you will find a description of the basic steps required for replacing the PN/CAN LINK.
Preparations
De-energize the S7 configuration including PN/CAN LINK.
SIMATIC PN/CAN LINK
Operating Instructions, 03/2018, A5E39895388-AB
CAUTION
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