MX 900 Series Installation Guide 23
May 13, 2015
Serial and Ethernet Ports
■ Up to three serial ports
– COM 1 and 2 are connected in parallel with the same serial port on
the berg connector.
– COM 3 is available only when I/O modules 2 or 5 are used with a Berg
cable that supports this feature.
– Do not connect to the COM ports on the I/O module and Multiport
cable simultaneously (only affects I/O module 2).
■ Ethernet
– 10/100 Mbit
– In parallel to the Berg connector
– Do not connect to the Ethernet ports on the I/O module and
Multiport cable simultaneously (only affects I/O module 2)
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