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Chapter 2 Specification of Communication port for CPU module
2 – 30
ON
OFF
OFF by system
R
eset request: R91x
P
rocessing inside CPU
ON by user
Reset processing
Figure 2.28 Reset function for Ethernet communication port
Cautionary note
The above bit can return the Ethernet communication processing inside EHV-CPU to the initial status but cannot reset
the hardware.
And even if the reset request is transmitted by turning on the above bit of the task code port and the ASR port which
cannot be used, it cannot be reset. Therefore, the reset request bit turned on by user is turned off by system.
Reference
The operation of reset processing is different between “a case where the connection is established” and “a case where
the connection is not established”.
In the case where the connection is established, the connection is closed first (the timeout is performed at 1ms if the
processing is not completed properly) and then the communication end inside EHV-CPU is deleted and
re-constructed.
In the case where the connection is not established, the communication end inside EHV-CPU is deleted and
re-constructed.
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