Description
2.6 Ethernet interface (PAC3220 only)
PAC3120 and PAC3220
Equipment Manual, 10/2019, L1V30425208F-01
31
Autonegotiation
Autonegotiation is a method used by network communication peers to automatically
negotiate the highest possible transmission rate.
The PAC3220 is automatically set to the transmission rate of the communication peer if the
latter does not support autonegotiation.
MDI-X auto crossover
MDI-X auto crossover describes the ability of the interface to autonomously detect the send
and receive lines of the connected device and adjust to them. This prevents malfunctions
resulting from mismatching send and receive lines. Both crossed and uncrossed cables can
be used.
2 Port Ethernet Switch
7KM PAC3220 offers 2 Ethernet interfaces that are internally connected via the Ethernet
switch.
This means that each Ethernet frame received at one of the ports is forwarded to the other
port and, of course, to the PAC3220. This supports Ethernet linear topology for efficient
cabling, with no additional cost for external Ethernet switches.
Note
Note for PROFINET
The failure of one of the
devices interrupts communication to the devices behind it.
his Ethernet switch is not suitable either in the PROFINET IRT environment or for the ring
The Switched Ethernet PROFINET expansion module (7KM9300
-0AE02-
0AA0) can be used
for both.
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