When an RJ-45 cable connection is made, and each time LINK is enabled, auto-
negotiation takes place (except for products, which do not have auto-negotiation and which
go to the default state accordingly). The PXES6P Switch advertises its capability for 10 or
100 Mbps speed and F/H duplex mode, and the device at the other end of the cable should
similarly advertise / respond. Both sides will agree to the speed and mode to be used per the
IEEE 802.3u standard. Depending upon the devices connected, this will result in agreement
to operate at either 10 Mbps or 100Mbps speed, and full- or half-duplex mode.
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4.3 Dual LEDs, Front-panel and side-panel (PXES6P Series)
LED Description
PWR
Illuminates GREEN to indicate power applied.
LK/ ACT
Steady ON for LINK w/no traffic, blinking for activity per port. LINK will turn off in
the event connectivity is lost between the ends of the twisted pair segment or a loss of
power occurs in the unit or remote device. The Link ports are also represented by
LA1, LA2, LA3…LA6. (Steady On or steady Off indicates no Receive Activity).
10/100
Steady ON for 100Mb speed, OFF for 10Mb speed per port (copper ports)
F/H (FH1, FH2)
Steady ON for Full duplex (F/D) mode, OFF for Half duplex (H/D) mode
per port (For fiber port only)
NOTE:
Ports #1 and 2 may be assigned as either copper or fiber ports depending upon the
model. If assigned as a copper port, the 10 or 100 designation on LEDs applies. If
assigned as a fiber port, the F or H designation on the LEDs applies.
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4.4 Hardware operated Alarm Contact for monitoring internal power supply
The Alarm Contacts feature, standard on
PXES6P Switches, provides one set of Normally Closed
(NC) contacts. This is typically used to provide
indication of a power failure. The terminal block for
Alarm Contacts is part of the Power Input panel on the
PXES6P Switch. The DC power input connection is in
the same panel.
The NC Alarm Contact is held closed
when there is power on the main board inside of the PXES6P. This provides a hardware
operated alarm because the NC contacts will open when internal power is lost, either from an
external power down condition or by the failure of the power supply inside of the PXES6P
Switch.
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