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Product designation
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Data is stored to the Flash memory of the head station and in the memory module:
- After a system startup
- On request by the user
When starting the MMS, the data is read from a plugged-in memory module (display
indicates "OP") and used as the active configuration. The data in the Flash memory is
overwritten by the data from the memory module.
Please note that the password stored on the memory module is also transmitted to the
MMS. Make sure that you know the password for the configuration on the memory module.
3.3.8.4
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Functions of the twisted pair interface
Auto negotiation
Auto negotiation is a method whereby the switch automatically detects the operating
parameters for the connected network and sets the corresponding parameters
(10 Mbps/100 Mbps data transmission rate and half/full duplex transmission mode) for
its RJ45 ports. Automatic port setting eliminates the need for manual intervention by the
user. The auto negotiation function can be activated/deactivated via the web interface.
Auto crossing
There is no need to distinguish between 1:1 and crossover cables, as the transmit and
receive cables are crossed automatically.
Auto crossing is only available if auto negotiation is activated.
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Auto polarity
The polarity is changed automatically by the switch if a pair of twisted pair receive
cables (RD+ and RD-) are connected incorrectly.
Line monitoring
The switch uses link test pulses according to standard IEEE 802.3 at regular intervals
to monitor the connected TP/TX cable segments for short circuits and interrupts.
Ports that are not being used are considered cable interrupts. In addition, a TP/TX path to
a deactivated termination device is also considered a cable interrupt, as the connected
device cannot send a link test pulse because it is switched off.
3.3.8.5
Network connection
See "FL IF 2TX VS-RJ ..." on page 3-10 and onwards.
3.3.9
FL IF 2PSE-F
The PoE interface module is supported by firmware Version 4.0 or later. Firmware
Versions < 4.0 treat the module as a standard RJ45 interface module. The module can
operate in PoE mode without management and without support from the firmware and
hardware (system bus) (see note below). No configuration options and no diagnostic data
are available, connected termination devices are nevertheless supplied with power.
The use of the PoE interface module requires the application of system bus firmware 5.00
or later in the head station and system bus firmware 4.00 or later in the extension modules.
If this requirement is not met in the head station or in any extension module, then PoE
management is not available in the entire system. The system bus firmware is displayed
on the "Device Information/General" web page.
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